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1.
a phrase meaning "oh my gosh!"
Gee wilikers! Your dick is HUGE!
by isarah August 05, 2008
 
2.
a variant spelling of gee willikers.
Gee wilikers, this movie's long!
by kadatz September 16, 2010
 
3.
Something to say in excitement
An exclamation of joy

abbreviation: geewhiz
ex. 1
"GEEWILIKERS!! Guess what? I got a new cat"
Ashley: GEEWILIKERS! OMG!

or
ex.2
Renita: What?
Ashley: I found a spiffy penny on the floor

or
ex.3
Renita: GEEWILIERS!
Ashley: What?
Renita: Im falling down a pit of doom!
Ashley: Geewilikers! let me help you
by sweet and spiffy June 17, 2009