* Janis Ian's TheReasonYouSuckSpeech to Cady could be seen as this.
* Janis's epic BackhandedApology as well.
* The infamous brawl scene in the hallway, also a CrowningMomentOfFunny.
* Cady's speech at the end definitely qualifies.
** Doubles as a CrowningMomentOfHeartWarming
* Cady saving her group's talent show performance when Gretchen accidentally kicks off the boombox from the stage. And earlier, Damien throwing back a shoe that hit his face when he was singing.
* After nearly an hour of Regina being a bitch, it was rather satisfying for the store clerk to deadpan "You can try Sears." at her.