look up any word, like sounding:
 
1.
An extremely hot girl who makes you go Ga-Ga.
1950's slang.
see also: "Uber Hot Babe" and/or "Hot Girl".
Check out the one on the left, what a Wacky Doo. *wolf whistle*
by Add Bacon April 09, 2012
 
2.
Similar to doodleflipping, a wackydoo is a way to say blowjob.
"Dude this chick at this party last night totally gave me a wackydoo... Until she bit down."

"After a great wackydoo, I can't wait to doodleflip."
by Nehshin July 02, 2013