A joke that is so funny that when all laughing has finished you feel as if you have been run over by a steamroller. You have trouble breathing, your chest hurts, smiling causes pain and the like.
"Oh man. That was a steamloller."
by Ethan Feldman August 06, 2005
Get the steamlollermug. "Steamloller!"
by steamloller March 13, 2003
Get the steamlollermug.