"T.M.I." contains examples of:
- Character Development: A negative, but awesome example—in the past, Cartman would just explode with rage over being called fat. Here, he orchestrates a death over the whole thing in less than fifteen seconds.
- Dark Reprise: Not of a song, but one of Cartman's old catchphrases—"I'm not fat. I'm big boned."
- Disproportionate Retribution: The psychiatrist tries to invoke anger in his patient by calling him fat to see how he reacts. Cartman responds by using an iPhone to implicate the psychiatrist was involved with a teenager online. The psychiatrist's wife calls her husband and kills herself over the phone.
- Flat "What.": Cartman gives one after learning that the school actually didn't post the boys' penis sizes.
- Hair-Trigger Temper: A characteristic of the "Pissed off and Angry Party".
- The Smurfette Principle: Even though she's a transgender, Gretchen is technically the only female student in the anger management class.
- Tame His Anger
- Teeny Weenie: It turns out that everyone is angry because of their penis size.
- Too Much Information: The episode title and much of the plot.
- Tranquil Fury: Cartman shows an excellent example sfter the Disproportionate Retribution above.
Cartman: (calm, but very clearly angry) I'm not fat. I'm big-boned.
- Would Hit a Girl: Randy beats up the Surgeon General for giving information that differs from his formula.