In the first season, when math and logic meet fashion.
How can you be a size 0? Zero means you don't exist!
In the fourth season when the remaining couples bring their partners to meet their friends and/or family the LARPer geek brings his partner on a gaming module. When they find out that one of their party is a traitor, the beauty, who up until now has been a lovable ditz says, in a flat, cold voice, "Kill her".