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a jar filled to the brim with cum, doesn't matter who's cum, and then you store it in the basement.

one day, when an atomic bomb hits and you're left to hide in the basement, so you don't die, and then however long later, you have to drink/eat the cum, depending on how old it is, idk if cum expires and turns solid like milk does don't judge me. and then u have to silently cry while you slowly consume the cum because aliens are invading and you don't want them to hear you consume cum, so you have to cry silently.
"hey broski, can you cum in this jar? i'm making a cum jar!"
cum jar by cyberfxngz January 1, 2024
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Someone who nuts in a jar until it’s full and then sells it on eBay and saying it’s mayonnaise
Zack:imma make a cum jar and sell it
Ben: Zack don’t do that someone will report you to the police
Cum jar by Orly$anchez4lifebitch February 3, 2024
The cum jar is where you fill a 500ml jar up with cum and give it to a girl to drink it
Max just filled up his cum jar to give it to a girl to drink
Cum jar by Triden001 January 12, 2026

rainbow dash cum jar 

the rainbow dash cum jar is a reddit post that depicts a rainbow dash figurine submerged in a mason jar full of cum. the owner of the jar would frequently update the posts and show the cum that has been added. the jar was later accidentally boiled over a space heater, turning the liquid brown.
“have you heard of the rainbow dash cum jar?”

Rainbow dash cum jar 

A act so vile and inhumane that the very mention of it alone will have you shunned from society.
Why don't you talk to john anymore

Oh, he did a rainbow dash cum jar
Rainbow dash cum jar by duderuthless February 28, 2020

November 20th National Cum Jar day 

On the 20th of November its Cum Jar Day!
Grab a Jar, and get fun going!
Jeez its November 20th National Cum Jar day Already? I'll better start!

November 20th National Cum Jar day 

Grab that Jar because it's November 20th! National Cum Jar Day!