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When your dick is partial chub and you grasp the lower shaft, forcing all the blood into the penal tip.
Tom: "Hey Gabe what did you do last night?"
Gabe: "Not much. My mom came in and caught me girthing though."
by Deputy Dingus April 15, 2015
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2
The act of showing somebody up and/or showing off something that another doesn’t have to make them jealous
Dude we know you got laid last night, stop Girthing
by dinkly deuce May 07, 2018
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