Top Definition
Pronounced (guhw-ee-ss-moe)

1. It is a term normally used when some good news has come your way. Usually after the word wicked.

2. It can be used as a sarcastic or unenthusiastic response to bad news as well.
1. "dude, math doesn't excist anymore!"
"Wicked guismo!"

2. "dude, we have 2,000 tests tomorrow."
"oh...wicked guismo..thats just friggin great!"
by Ken September 15, 2005

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