Definitions by Pissmaster69420

clenchmaxing 

An exercise of clenching your glutes so hard that a males pelvis area increases in size, It could potentially lead to making your shaft the size of hulks forearm

I started clenchmaxing, ever since then I can't find underwear big enough to fit my johnson.

clenchmaxing by Pissmaster69420 March 21, 2024