cum stone 

A large amount of cum in a pile that has hardened over time.

I went over Matt's house yesterday and accidently stepped on his cum stone!

cum stone by Gavin Clarke June 13, 2007

Cum stone 

A stone that is made of or creates cum. The stone is usually blue and is presented in fontcest fan art (unfortunately)

“Bro is that the cum stone”
“it’s a blanket”
“but blue”
“No”
“cum”

Cum stone by GhostieToms January 18, 2022

CUM STONE 

Where you cork up your dick hole in the middle of an orgasm. Then you stick it in a mini fridge overnight to freeze up into a cum stone. Almost acting like a kidney stone

Me and the buds made a cum stone this weekend.

CUM STONE by DSDATURA January 31, 2024

Cumstone 

A large mass of semen that has solidified in the testes due to extreme periods of time between ejaculations. A medical emergency, this occurrence causes immense pain upon expulsion from the glans. Not to be confused with "Cum Stone"

^^^SEE DEFINITION OF CUMSTONE^^^

Cumstone by Dr. Mathulous September 8, 2011