A woman sees a man and becomes so infatuated with him that she practices pronouncing or signing her first name with his last name, or even "Mrs." plus his full name.
Less commonly, men do this with their girlfriends' names.
Averts The Maiden Name Debate.
- As The Legend of Korra takes place in a setting where last names are not universal, and the series ends with an Official Couple with one girl — Asami Sato — who has a last name and one — Korra — who doesn't, fan fics were quick to adopt the practice of having Korra take the name "Korra Sato," whether depicting the two as married or not.
- In Dangan Roleplay round 3, Towa Monaka, who's been in hiding for years by this point, has been watching the previous rounds with her new dimension-warping Puella Magi powers. After seeing how a certain Sinister Minister out-despaired Monobear in the last game, she develops a Precocious Crush on him from afar and fills notebooks with "Mrs. Kotomine."
- In Harry's Years Ginny writes "Lady Potter" on everything she can get her hands on, despite the fact that her only interaction with Harry is staring at him and following him around the school.
- In Mean Girls, when Regina wants to convince Aaron that Cady is a psycho, she lies that Cady writes "Mrs. Aaron Samuels" all over her notebooks.
- In Big, Susan complains about her recently engaged secretary doing this all day long:
Susan: I'm not getting any of my mail, nothing has been filed. Ever since she got engaged, my life has been a disaster. She spent the last three months writing down her married name. "Mrs. Judy Hicks", "Mrs. Donald Hicks"; "Mrs. Judy Mitchellson Hicks", sometimes with a hyphen, sometimes without a hyphen. Sometimes, she spells the hyphen.
- Pride and Prejudice: Lydia leaves a note when she elopes rejoicing over how the next time she writes, she will sign her name "Lydia Wickham."
- The narrator of Wuthering Heights first becomes interested in the story of Heathcliff and Catherine when he finds evidence of this trope in Catherine's old room.
- In A Civil Campaign, after Ekaterin proposes to Miles during the middle of a council session, he begins writing her name in excess on loose sheets of paper, Lady Ekaterin Nile Vorvayne Vorsoisson Vorkosigan (the three Vors are her maiden name, her recently deceased husband's name, and Miles' own name along with him granting her the title of Lady). This is in contrast to the mercenary hand-weapon doodles he was making before.
- In Stephen King's IT, Ben Hanscom thinks of Beverly Marsh like this at one point early in the story.
- Little Women: Jo realizes she is in danger of, as she sees it, losing Meg when she finds out Meg has been scribbling "Mrs. John Brooke."
- In Sidney Sheldon's Bloodline, Elizabeth Roffe imagined becoming "Mrs. Rhys Williams". It became true.
- In Everyone Else's Parents Said Yes by Paula Danziger, 13-year-old Amanda is asked on her first date by a boy named Danny Cohen. Her brother Matthew finds a piece of paper covered with names like Amanda Martin-Cohen and Mrs. Danny Cohen. He plans to use it to blackmail her, but his parents find out, so he doesn't get to do this.
- iCarly: Sam calls Carly and Freddie 'Mr and Mrs Benson' in "iSaved Your Life".
- Carly in "iDream of Dance": "If he's a nub, then someday I want to be Mrs. Carly Nub."
- Sam in "iPie": "Why can't I marry this pie? All I want out of life is to be Mrs. Sam This Pie."
- In "iParty With Victorious", Carly imagines herself as Mrs. (Steven) Carson, writing "Carly Carson" on the computer in various fonts.
- Rachel's friend Mindy does this in Friends: "I want to be Mrs. Barry Farber, DDS."
- In Lois & Clark: The New Adventures of Superman, Lois briefly considers taking up the name Kent after her marriage to Clark. She takes Clark's nameplate from his desk at the office and covers the "Clark" in "Clark Kent" with her own nameplate to see how "Lois Lane Kent" would look.
- In the season 1 finale as Lois is about to marry Lex Luthor, she practices "Lois Luthor" and its variations to herself in the mirror before realizing that none of them feels right; but "Lois Kent" does. She still goes through with the ceremony, though.
- On The Brady Bunch when Marcia develops a crush on her dentist, she imagines life as "Mrs. Marcia Dentist."
- In The Big Bang Theory, when the guys are watching America's Next Top Model, Howard keeps pointing out which of the contestants is "the future Mrs. Wolowitz". Of course, Howard being Howard, "the future Mrs. Wolowitz" is pretty much every contestant.
- In "The Boyfriend Complexity," Penny pretends to get back together with Leonard because he's the only boyfriend her father has ever approved of. In one scene, she says to Leonard, "You know what I've been doing for the last hour?" and Leonard asks, "Dreamily doodling 'Mrs. Leonard Hofstadter' in a notebook?" Penny has tired of the whole charade by this point, so she's not amused.
- Anya sings a whole song about becoming Mrs. Anya Christina Emmanuella Jenkins-Harris in the Buffy the Vampire Slayer episode Selfless.
- In Neighbours, Tad Reeves develops a crush on Susan Kennedy and is caught writing 'Susan Reeves' over and over again in his exercise book. Oh, and Susan just happens to be his school principal.
- In the Doctor Who episode Blink, upon meeting Detective Inspector Billy Shipton and being told of the mysterious disappearing vehicles at Wester Drumlins, plucky girl detective Sally Sparrow fumbles and switches his surname for hers, identifying herself as Sally Shipton. It's played as an unmistakable sign that she's into him.
- Played for laughs in Happy Endings with Penny after she meets the unfortunately named Doug Hitler.
- In How I Met Your Mother, the incredibly drunk Ted and Barney get into a fight over Robin and have this eloquent and well reasoned debate.
Barney: Robin Stinson!Ted: Robin Mosby!Barney: Robin Stinson!Ted: Ted Sherbatsky! I'll take her name. I don't care.
- Genderflipped in this fanart for Call the Midwife.
- During the Season 4 Full House episode "Secret Admirer" (in which a letter from Rusty - son of Danny's girlfriend from the first half of that season - attempts to send a love letter to his crush, D.J.); Kimmy Gibbler comes into the possession of said letter and thinks it was from Uncle Jesse; briefly leading to Kimmy thinking of invoking the trope before thinking it would be better for Jesse to use her last name.
- In Garfield, Jon takes the thought process to a ridiculous extreme when he ponders what Liz's name could be if they got married: "Mrs. Jon Arbuckle, Mrs. Liz Arbuckle, Mrs. Liz Wilson Arbuckle, Dr. Mrs. Liz Wilson Arbuckle," etc.
- In an early Peanuts strip, Violet tries to imagine being married to Charlie Brown and says, "Mrs. Violet Brown..., Nope, I just can't see it."
- In a later strip, Sally imagines herself as "Mrs. Sally 95472" and delivers the same punchline.
- Beetle Bailey: One of General Halftrack's officers is mildly disturbed to find a notepad with "General Amos Buxley" on it.
- While serving as a commentator on WWE Smackdown, John "Bradshaw" Layfield would refer to Michelle McCool as the "next ex-Mrs. Layfield".
- When the German national soccer team went through a series of coaches in a rather short time period, the host of a comedy show joked about the decision on who would be the next coach. "What's his name? Our future ex-national coach? Ah, yes, Christoph Daum." Hilarious in Hindsight, as Daum really lasted only a few months.
- In One Touch of Venus, when Venus first hears Rodney Hatch say his full name, she repeats it to herself, then adds "Venus Hatch" to test how much she likes the sound.
- Bye Bye Birdie has a song in which Rosie sings about how she could have been "Mrs. Peterson ... Mrs. Albert Peterson ... Mrs. Phi Beta Kappa Peterson, the English teacher's wife." She actually is engaged (sort of) to Albert and is (mostly) bemoaning that he's Conrad Birdie's agent/songwriter rather than a professor of English, but the reason he's not an English teacher is largely the same reason they're not married yet: he refuses to stand up to his controlling shrew of a mother.
- In Milk and Honey:
- Clara, leading a group of Jewish-American widows on a husband-hunting tour of Israel, sings:
Mrs. Segal, Cincinnati,
Finds it oh, such a comfort to believe
Tho' she came here Mrs. Segal, Cincinnati,
She may come home Mrs. Levy, Telaviv.
Mrs. Perlman, Jersey City,
Has been thinking how lovely it would be
To send home a postal card to Jersey City
And to sign it Mrs. Cohen, Galilee.
- Ultimately, only Clara finds a prospective husband, and she tells the others her future married name in a reprise:
Mrs. Horowitz, from Jerusalem
And you'll hold out your hand and say "How nice."
Not remeb'ring Mrs. Hor'witz from Jerus'lem
Was the former, God should help me, Mrs. Weiss!
- Clara, leading a group of Jewish-American widows on a husband-hunting tour of Israel, sings:
- Seen in Fiona's childhood diary in Shrek 2: "Mrs. Fiona Charming" (as in, the wife of Prince Charming).
- Though Charming is shown to be his first, or even only, name, so it's unlikely she'd actually be called that even if she did marry Prince Charming.
- Played with in Mickey, Donald, Goofy: The Three Musketeers: a lovestruck Minnie writes "Mickey and Minnie Mouse" in her notebook, and then notices that they already have the same last name.
- Duck Dodgers: Genderflipped when the title character is attracted to the beautiful secret agent brought on board.
Duck Dodgers: Captain Duck Yoshimi. S'got a nice ring to it.
- DuckTales (1987) crosses paths with this trope when Scrooge visits a Bad Future where Magica de Spell, after taking over his business (and the city along with it) changed the name of McDuck Enterprises to "Magica McDuck Enterprises," for some unexplained reason.
- Archer featured a Ho Yay version of this with Lucas Troy, Archer's best friend, trying to come up with what their names would be if they took each other's last names... while hunting Lana and Cyril.
- In The Weekenders, a daydreaming Lor sounds out her name with her crush's last name a few times, before deciding she prefers his first name with her last.
- In The Adventures of Puss in Boots a group of black cats decide to trick a Puss cursed into being black into staying with them forever, which is detailed in their "mystical tome", which turns out to simply be the leader's diary. After that the diary is just filled with "Mr. and Mrs Fransisco Puss in Boots" over and over.
- On Hey Arnold!, one of these moments begins a Running Gag in the series.