You knew I'd get to them sooner or later. From X-Men #1:
Tardiness will be punished! By a lobotomy! I've got funky mental powers, so don't push it!
Check out the expression on Prof X's face. You can tell he's sick of their sucking up already....
Wow. I see two guys who have serious issues with their fathers....
That's some great battle training there, Prof. Dance, monkey! Dance for my amusement!
Equally awesome training. Flap your wings, boy! Flappity flappity flap flap flap them wings!
Now, Cyclops.... kill your classmates for your professor's love!
A little bonus, hilarious-out-of-context dialogue from X-Men #2: