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3.
an ugly muffin head
did you see john last night? he looked like twibble
by abcdefjpoliweht February 12, 2009
 
1.
My roommate Stevo laughed until he twibbled
by SwanmasterSwan November 28, 2006
 
2.
A verb commonly used to confuse people. It has no real meaning, but many picture it as some sort of a silly.. action.
Malawar twibbles about, aimlessly.
by Malawar March 19, 2004