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1.
Guk
Tripping into flowerbeds or a person who trips people into flowerbeds
aaron had a Guk coz hes a gimp that wayy (Y)
OMG REISS YOUR SUCH A GUK
by BURNbabyBURNOWWWCH April 30, 2009
 
2.
guk
Male ejaculate. Used in a girlfriend / boyfriend context when trying to avoid some of the more coarse definitions such as cum.
Honey - here's a tissue to wipe up your guk
by sanddevil April 22, 2007
 
3.
guk
mayonaise based sauce served at canadian burger chain 'licks'

I'll get guk and ketchup on my burger.
by dweezil November 23, 2007