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4.
Oh No!
Great!
Im so surprised!
Gee wiz that was funny.
by Nick Hofstetter August 29, 2003
 
1.
Synonym for "wow". Alleged etymology: A way of saying "Jesus!" without being accused of swearing. More often used as a negative exclamation than a positive one.
Gee wiz, what have you gone and done with your hair?
by Xaviana December 01, 2003
 
2.
It's what you say every 5 seconds on a 50's sitcom. Goes great along with that's swell. Means: oh shoot, darn it, wow, that's grand
Can be used in a variety of ways.

Gee wiz, Dad, you sure are swell!
by whitelulu October 26, 2006
 
3.
An exclamation of joy often used by people dressed in tweed jackets.
"Geewiz Henry, this ginger ale is simply devine!"
by Nikells July 03, 2005
 
5.
I'm soo surprised.
Gee wiz that was funny.
by Nick Hofstetter August 29, 2003
 
6.
a "Gee wiz" or "g-wiz" is a street term for one thousand dollars in US currency.
"yo this motha-fucker owes me a motha fuckin g-wiz son"
by Joe- the Basement Crew September 05, 2004