'''Basic Trope''': Two characters who were previously thought unrelated are revealed to be parent and child or somebody in the family other than being a parent and child.
* '''Straight''': Sam turns out to be Bob's father.
* '''Exaggerated''':
** Sam turns out to be Bob's father and brings a photo album, family tree and positive DNA test to prove this.
** After Sam reveals himself to be Bob's father, Alex suddenly reveals himself to be Bob's long lost half-brother, then Carol chimes in, revealing herself to be Bob's cousin who he has never met, Alice [[LukeYouAreMyFather reveals herself to be]] [[KidFromTheFuture Bob's daughter from the future]] and so on until pretty much all the mayor characters on the show are revealed to be related to Bob somehow. A TangledFamilyTree ensues.
** [[MonsterProgenitor ALL human beings are descended from Sam.]]
* '''Downplayed''':
** The fact that Sam is Bob's father is only a subtle fact no character in the show speaks about.
** Sam is Bob's uncle/grandfather.
* '''Justified''':
** Bob's mother Kim divorced Sam and got sole custody, vowing never to let Sam meet Bob.
** Alternatively, Sam doesn't want his son to know who he is, and until recently done his best to prevent Bob from finding out
** Bob [[HeroicBastard is the result of a one-night stand]], or the SonOfAWhore-a lot of people could turn out to be his father, Sam included.
* '''Inverted''':
** LukeYouAreMyFather
** Bob has always thought that Sam is his father. Turns out Andy is Bob's father.
** Alternatively, the character knows who his father is from the start, but nobody else knows this.
* '''Subverted''':
** FamilyRelationshipSwitcheroo
** Turns out Sam [[ILied was lying]].
** Hints are dropped to the effect that Sam is the Bob's father: there's a DisappearedDad nobody wants to talk about, they have the same powers and heck, they even look alike. Then Kim reveals that Joe was actually the father.
* '''Double Subverted''':
** Hints are dropped to the effect that Sam is the Bob's father until Kim claims that Joe was actually the father. Joe insists that he's not, and DNA tests prove that Sam is in fact Bob's father.
** However, it turns out that Joe and Sam are the same guy.
* '''Parodied''':
** Sam proclaims himself to be Bob's [[Film/{{Spaceballs}} father's brother's nephew's cousin's former roommate.]]
** [[VideoGame/IWannaBeTheGuy Sam proclaims himself to have had sex with Bob's mother.]]
** Bob has had every villain in the series claim to be his father regardless of [[HasTwoMommies biological sex]]. And he is downright sick of it:
-->'''Bob''': "More of you villains have claimed to slept with my mom than [[BlandNameProduct Z-Pyramid Live]]! I'm goddamn fed up with every one of you sickos thinking I have obvious daddy issues you can use to manipulate me!"
* '''Zig Zagged''':
** Kim tells Bob that Sam was his father. Bob sets out on a quest to find Sam, only for Sam to reveal that he never even slept with Kim. But Bob looks an awful lot like Sam... but then Sam has a brother, Joe, who seems awfully interested in Kim. Because there's no DNA testing, we never find out who Bob's father was.
** LukeIMightBeYourFather
* '''Averted''':
** The identity of Bob's father is never discovered.
** Bob knows for sure who his father is.
* '''Enforced''': "How about this for a twist: these two characters turn out to be related!"
* '''Lampshaded''':
** "Oh yeah? So where the hell's my allowance?!"
** "Well, this feels like a [[http://en.wikipedia.org/wiki/Tabloid_talk_show tabloid talk show]] all of a sudden..."
* '''Invoked''': Bob's family is used as an experiment to determine the differences in a family with and without a father, so Jack forces Sam, Bob's father, to leave the country and Kim to never mention it. Cue 18th birthday, where Sam returns and reveals himself
* '''Exploited''': ???
* '''Defied''': Sam intentionally contacted his child before the series start specifically so that Bob wouldn't grow up not knowing who his father was.
* '''Discussed''': "I can't wait to see how they explain ''this''."
* '''Conversed''': "And they thought now would be the best time to reveal this because...?"
* '''Deconstructed''': The ramifications of this statement are thoroughly examined as Bob and Kim comes to grips with Sam's appearance. Bob, Sam and Kim sit down and have a long heartfelt chat over their family's history and the decision to divorce. Whether Bob accepts Sam, Kim takes back Sam or Sam truly loves either of them is yet to be seen.
* '''Reconstructed''': Sam spent years of his life trying to find Bob, knowing what a terrible mother Kim would turn out to be. Bob is relieved to see Sam and accepts him wholeheartedly.
Back to the [[LukeIAmYourFather main page]], because he's your father.
%% Optional items, added after Conversed, at your discretion:
%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???