After presenting a group video project in Government class...
Student #1: "Aw... come on, Mr. _(teacher's name)_! You liked our project..."
(laughter in class)
Student #2: "You so DID like it, Mr. _(teacher's name)_. You know you did."
Teacher: (says with sarcasm) "Yeah, yeah... sure I did."
Student #1: "You DID! You were LAUGHING!"
Teacher: "Well, there's really two ways to laugh: one with and one AT."
Class: "Oohhhhhh... BURN!"