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'GUMB' is a Internet-based acronym. It represents the phrase "Genital Up My Bum".
I really enjoyed having a GUMB the other day
GUMB by gayrights October 10, 2009
Related Words
A general derisive term possibly derived from either Jame "Buffalo Bill" Gumb from The Silence of the Lambs, or the star of the Gumby Show.
Don't fall now, you fucking gumb! I don't have you!
- Josh Lowell, 2000
gumb by SamAdams February 1, 2005
1. An escalator.
2. A singular 'fishy' of sperm
1. "Why take the stairs? Take the gumb!"
2. "That tadpole looks like a gumb."
1.& 2."I shot my gumb right into Stacy's mouth"
Gumb by Underscrotum August 22, 2004
stands for “Get Up My Butt
Logi is so hot I want him to gumb
gumb by nice dog June 27, 2026

Gumb-ass 

My sister is a Gumb-ass
Gumb-ass by ixamxgodx009 December 20, 2008

Gumby's Mouth 

When a woman's vagina has lost all elasticity and now looks like the mouth of the Green claymation character Gumby.
"Wow! Look at that old sloppy pussy! It looks just like Gumby's Mouth!!!
Gumby's Mouth by will bitten November 4, 2017