Whodidido 

This is an expression of stupidity and boredom. It means nothing and is derived from the question "Who did he do?!". A small group of students accidentally stumbled upon the phenomenon when vigorously studying for a psychology exam. If the queston "who did he do??" is stated fast enough in one burst of energy, the expression is born.

......whodidido?!?!

Whodidido by mallu064 May 27, 2011

whodiddy 

anything you are trying to explain to someone and can't remember the name of

you ask your friend to pass you a certain tool and you can't remember the name of so you say to your friend you know the whodiddy! its the new generation for the saying thingy majiggy

whodiddy by bella-waldo February 8, 2010