Top definition
The act of borrowing any object from a friend with no intention of ever giving it back.
Hey what happened to all of your music CDs? Mike came over and Geseked them.

Hey Chris has a lot of DVDs lets go over and Gesek them!
by AG38205 January 18, 2013
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2
a man who has 3 testicles and an extremely small penis and his friends just use him for his mom and has gay sex with a jasenski.
my three testicles itch and i am in the mood to have sex with a jasenski i must be a gesek.....i have a hot mom dont i???
by sam gesek June 04, 2006
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