Well my Powerscore class is relatively new, so let me share this one with you.
There's this Indian girl who is constantly talking to the instructor aloud as if she's having a one on one. She's one of those that doesn't raise her hand and just speaks openly her thoughts on the question. She also floats these sometimes wild perspectives on conditional reasoning, trying to argue her point for no real reason other than to hear herself speak.
Anyway, eventually she became so comfortable she thought she can start teaching the class. Another girl didn't understand one of the concepts correctly and stated what she thought it was. The Indian girl turns around, thinks for a second and says, "No, it's this and this and that."
The instructor says, "thanks I'll teach the class".
Amazing put down! Loved every second of it.