fat that gathers around your armpit, most noticible when wearing things such as tube tops.
My sister poked at my tub chub and told me i needed to hit the gym more often.
by lalalalallalalalalala June 1, 2005
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An annoying fat chick with huge calves and spare tires for waste.
we called jessica tub-a-chub because of how fat she was.

"dont be such a tub a chub"
by john jacobson October 1, 2006
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When you're at the movies with a chick, and you put a hole at the bottom of the popcorn tub and place your dick inside. You are now in possession of the Chub Tub.
Grogs : So how was the movie with Steph?
Shizzle: The movie was lame but I gave her the Chub Tub so it turned out to be so legit.
by MixMastaShizz January 1, 2011
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Someone who is a bit on the chubby side but not obese.
dude look you can tell hes a chub tub by the fat belly
by theswagster January 7, 2016
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When you are stuck in a hot tub with a fat chick.
Tom: "Wow. look at joe he looks like he hates his life."

Mike: "Yeah hes stuck in the chub tub with karen."
by OfficerAwesome May 21, 2009
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A derogatory term for people who are overweight. For people typically named Matthew.
by Georgio Doumani November 11, 2021
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When your elderly father overestimates his own strength and gets stuck in the bath tub, you have to help him out, and you see his shrivelly willy in the process.
Sarah has been traumatized by the Texan Tub Chub and never wants to see her dad’s junk ever again.
by Nat R. September 6, 2023
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