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.
(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?