Otto Mann is Lisa and Bart's bus driver at Springfield Elementary on The Simpsons.  Otto is of German descent and is into heavy metal and drug use.  He's also known for driving like a nut job.

Otto Mann Quotes

(A concerned Bart boards the school bus.)
Otto: Hey, Bart, dude! Whoa, you look freaked.
Bart: Hey, Otto man, I got a big test today that I am not ready for. Could you please crash the bus or something?
Otto: Oh, sorry, little buddy. Can't do it on purpose. But hey, maybe you'll get lucky!

Marge: Ultimate makes everything worse
Otto: Not frisbee!
Marge: Otto, don't you have a sack to hackey?

The Simpsons Quotes

(Bart shows the whole classroom the tape for his project called, "How Kittens Are Born: The Ugly Truth")
Bart: and here comes Snowball II. This is the one we kept.
All: EWW!!
Bart: We were gonna keep the gray one, but the mother ate her.
All: EWWWWW!!
Martin: Mrs. Krabappel, he's traumatizing the children!
Mrs. Krabappel: As usual, I agree with you, Martin. Bart, shut that off and take your seat immediately!
Bart: Oh, look! This is really cool. When I hit reverse, I can make 'em go back in.
(The whole classroom screams)

Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!