being "lathe'd" by a miniature samurai with a naginata;
being run over by a race car that makes the sound "TIIIIIIINES" driven by a fork;
being "arrowed" by a giant man who shoots arrows from his mouth;
dying...somehow.
The series is best known for spawning several minor memes, including "ow! my [something unusual]!", and being pwned by something with the caption "[said something]'D!", "It's over!", and others. It also makes fun of various stereotypical high-school/teen/young-adult activities, such as prom, sweet sixteen birthday parties, and Valentine's vamlumtimes day, with a gradually increasing ratio of directed, ridiculing humor to simple absurd humor.A (so far oneshot) spinoff of this spinoff was created based on the several characters named "Greg" in the series. 4 Gregs is a misadventure of four such characters who each embody some sort of nerdy/geeky/dorky stereotype.
Adorkable: What's Her Face. "Uh...hi. I like music, and um, cloth."
A Good Name for a Rock Band: Issue 12 gives us the two hipster kids who decide "She Likes Cloth" would make a good band name. Also, when the girls are forming a band, So And So suggests "Smartly Pretty", but is shot down in favour of "Kissyboots".
Against My Religion: "Thank groodness. Sweating is against several of my religions!" -Cheerleader in Issue 14
All Girls Want Bad Boys: So and So has shown an attraction to Tompkins, considering him a "renegade", though he's more or less your typical high school slacker.
All Guys Want Cheerleaders: Subverted. Amongst the group, Cheerleader actually gets the least amount of attention from boys over the course of the series.
Blatant Lies: In issue 15, when Manolios Ugly One tells Dn'D Greg to not lay a finger on his daughter (if he does so he'll gut him like a sheep), a random gutted sheep says that it isn't so bad... when it turns out to be bad. Also, in the same issue, Arrow'd Guy claims that What's-Her-Face will come into her own in college... and then immediately afterward shoots her down with a flock of sparrows. "A new twist on an old classic!"
Bottomless Pit: Their school has one (named after its sports team, of course)
Boy of the Week/Temporary Love Interest - Most of the Girls' boyfriends, though Sci-Fi Greg and What's Her Face seem to have a more off-and-on relationship.
Everything's Even Worse with Sharks: "My bass feels seaworthy." And then the shark proceeds to eat most of her and take her place in the Kissyboots band.
Extracurricular Enthusiast: So-and-So explains that the "Priggity Prizom" is the name of this year's prom, and adds, with a deranged look, "I was on every committee ever." This fits well with the preppy overachiever stereotype she personifies.
Eyes Always Shut: Japanese Culture Greg. His eyes briefly pop open in issue #15 when he calls his prom date "CHIZUKO!".
The Friend Nobody Likes: What's-Her-Face is explicitly called the "pity friend" and is the one the other three are most likely to ditch or relegate to least-desired roles.
Gretzky Has the Ball: A Scotsman caber-tosses Cheerleader in Issue 10 and is disgusted that his throw only goes 23 meters. Success in the caber toss is measured by straightness, not distance. The creators point out their mistake in the DVD commentary.
Her Code Name Was Mary Sue: Creator Strong Bad inserts himself into several of the comics, often as the love interest of one of the girls.
Hollywood Nerd: So and So. The 4 Gregs definitely qualify.
I Fell for Hours: "When you fall in a bottomless pit, you die of starvation."
Mind Screw: The ending of "4 Gregs." So basically, Strong Bad was drawing the Teen Girl Squad drawing the four Gregs drawing the girls drawing the Gregs drawing the girls drawing the Gregs drawing the girls drawing the Gregs drawing the girls drawing the Gregs!
And it's a SUPER Mind Screw if you count the Brothers Chapman, so that means the Chaps are drawing Strong Bad drawing the Teen Girl Squad drawing the four Gregs drawing the girls drawing the Gregs drawing the girls drawing the Gregs drawing the girls drawing the Gregs drawing the girls drawing the Gregs!
Only Sane Girl: What's Her Face is probably the only one with any common sense. For example, she is the only one who refuses to jump into a lion's mouth for the secret Santa.
Out-of-Character Moment: While So-and-So and The Ugly One stayed relatively as they always were when Cheerleader died in episode 9, What's Her Face took advantage of not having to be the sensible one anymore and ate a heaping bowl of "Staple Sauce". This, understandably, killed her.
Ow, My Body Part!: A frequent running gag. Examples include "Ow! My skin!", "Ow! My hopes of reaching first base!" and "Ow! My entire life!"
Variants are used, too, such as, "My blood hurts."
Perky Goth: So and So adopts this persona when the girls form a band in Issue 8. "I'm going with that gloomy keyboardist look I keep hearing about!"
The Pig Pen: One Spinoff Babies episode of Teen Girl Squad has What's Her Face as a direct parody of the original Pig Pen, as lampshaded in the commentary.
The Ugly One is sometimes suggested to embody this trope in the main series.
Police Are Useless: "Uh, yes, ma'am. We got a report of us wanting to watch the Ola Toya fight. You mind if we investigate?"
Serious Business: Valentime's Day (issue 12). Apparently, Cheerleader risks losing her "Mindy cred" if she doesn't get enough Valentine's cards from enough boys.
Sure, Why Not?: What's Her Face suggests killing someone off in the tenth episode. Strong Bad complies (as if he needed What's Her Face's suggestion as an excuse).
Talking to Himself: Matt Chapman aside, Strong Bad voices all of the comics' characters.
They Killed Kenny Again: Some number of the Teen Girl Squad almost always die by the end of almost every episode, the exceptions being episodes 2 and 3 and the Decemberween special.
Title Drop: Done straight by Strong Bad at the start of every toon. Played with in issue 9:
So And So: "You guys, I think this might be the start of a kinder, gentler squad of teen girls."
Unfortunate Names: Since her father's name is Manolios Ugly One, The Ugly One's first name seems to be The. (Granted, this is so common in the Homestar Runner universe that it has its own name amongst the fandom.)
Unpopular Popular Character: Amongst fans and the creators of the show, What's Her Face may be the most popular character. In universe, the opposite is true.
Vague Age: The Teen Girl Squad are described as "teenage girls between the ages of 13 and 19", with What's Her Face being fifteen at the youngest, since she's had her license for a year (in some states, mostly Midwestern ones, you can get your license at fourteen).
The Ugly One's birthday is her "Sweet Someteenth".
"We're in eighth grade!"
You Killed My Father: An astronaut punches out So-and-So's overbearing manager at Shirt Folding Store because she killed his dog. And then he flies away.