(1) Present participle of the verb "to chub"; (2) experiencing a transitional state of male arousal where the penis is partially engorged sufficient to create evident increase in length and girth, but lacking sufficient rigidity to be useful for much more than slapping your girl's hooha to get her wet; (3) to be possessed of a chubber
by L.F.Sternn October 10, 2019

I first heard about this when my sister was tucking in her kids on Christmas Eve...it means “chubby, “available” fingers
by Just met Kim April 21, 2018

Erection caused by moving water flopping around and stimulating your genitals. Can be amplified by loose fitting, silky swim trunks.
by Uhuhoxidized May 28, 2024

by Georgio Doumani November 10, 2021

The mandatory determination and disclosure of your penile engorgement percentage. A important question posed by a friend in a group when they are curious of the state of each of their bros penises.
Friend 1: “Ayo chub check!”
Friend 2: “Shit ah, 30%? I was thinking about your sister!”
Friend 3: “Zero bro, I ain’t hard at all.”
Friend 2: “Shit ah, 30%? I was thinking about your sister!”
Friend 3: “Zero bro, I ain’t hard at all.”
by Euri_Tahdid July 18, 2023

A nature chub is a semi erection that men achieve after having witnessed something beautiful in nature or an amazing view of it.
I was shredding this bluebird, and on the chair lift and when I looked back and saw the view I got a nature chub.
by robi22 July 8, 2016

by Mriknowitallmorethanyou October 21, 2015
