for me its pretty much anything that heimlich says throughout the movie but my favorite is when he is pretending to be a bumblebee chasing the floors and he sees the flies with candy corn and says
OOOHHH CANDY CORN..HERE LET ME HELP YOU TO FINISH IT
just the way he says it and the look on his face is hysterical
I love Slim "Why should I go out there? They'll just LAUGH at me." "That's because you're a CLOWN!!" "Nooo, it's because you always cast me as the prop. The broom. The stick. The SPLINTER." "You're a walking stick! That's funny! Now get out there!" "You PARASITE."
and
"Tra la la la la, spring is in the air, and I am a flower with nothing interesting to say."
Supermodels...spoiled stupid little stick figures mit poofy lips who sink only about zemselves.