When you build up smegma in your foreskin, then ejaculate and let your semen sit inside your foreskin to cook over night. The resulting product is what's known as penis butter.
by Scrotum Slayer May 5, 2020
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when you have swamp ass and from under cheese and it mixes together.
In gym class I had so much Penis Butter cooking up,it started to smell and drip.

Dude never smell your Penis Butter, EVER!

Gross,did you hear that John Kirk actually thought Penis Butter was like Apple Butter so he put it on his toast and ate it.
by tophieCC September 3, 2009
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A generic descriptor for any food tainted with massively unpleasant ingredients.
Make sure you watch Jim prepare those egg rolls; he's lord of the penis-butter sandwich.
by sixtyfps March 6, 2009
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When a guy ejaculates into a girls held-together thighs with the head of his dick nestled between her legs, instead of jizzing in her vagina or upon her stomach.
Hey what happened last night?
Man we ran out of condoms so i just gave her a penis butter samwich.
by 82BU September 21, 2015
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A Penis Butter and Jelly sandwich is when a guy cums in a girls vagina when shes on her period and there is a mixure of blood and jizz oozing from her slot. Her vag flaps supposedly being bread
I totally gave her a Penis Butter and Jelly

He lightly enjoyed the sight of her penis butter and jelly sandwich, he hated the taste
by NinjaSammichBear January 18, 2011
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When you pull out and evenly distribute your load across the girl’s stomach, then jump on top of her and squirm around while yelling, “Peanut butter jelly! Peanut butter jelly!”
Me: Yo that chick I banged last night won’t text me back.
Bud: Wtf did you do?
Me: I don’t know, maybe she didn’t like the penis butter belly sandwich I made for her.
by daddyblast69 April 14, 2023
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