When a woman is on her period and doesn't do a good enough job wiping after taking a shit, blood and crap are stuck in the butt crack and are therefore called a peanut butter jelly sandwich.
My girlfriend Teresa is so gross. She never washed away that nasty peanut butter jelly sandwich forming in her ass crack.
by I-Am-The-Cold June 13, 2016

someone that has outer-space jelly-beans, so each time they ejaculate, their semen is a different flavor of jelly-bean.
Sally: why does your jizz taste so yummy?
Bob: i ate some jelly beans from outer-space.
Sally: you're a cosmic jelly-bean jizzer? that explains everything!!!!
Bob: i ate some jelly beans from outer-space.
Sally: you're a cosmic jelly-bean jizzer? that explains everything!!!!
by Gentleman thief April 26, 2010

It's peanut butter k-y jelly time
by zac August 10, 2003

Anal sex. Also known as "Santorum-time." Santorum meaning "that frothy mixture of lube and fecal matter that is sometimes the byproduct of anal sex."
by The Tao October 23, 2008

A sexual act in which a male alternates between inserting his penis in a woman's anus and vagina specifically when the woman is menstruating. Fecal matter deposited on the penis is referred to as the "Peanut Butter" due to its thick brown appearance and menstrual secretions are attributed to be the "Jelly" due the pasty red residue resembling strawberry jam. For added effect this act can be performed to the song with the same name, "Peanut Butter Jelly Time."
I heard the "Peanut Butter Jelly Time" song the other day and I had a sudden urge for some real Peanut Butter Jelly Time! My girlfriend just happened to be menstruating so I called her over for some good old fashioned fun. Things got rather messy but boy was it worth it!
by Valsleezy April 8, 2008

by Egirl420 December 17, 2020

When you are having sex with a women who is on her period, switching between her ass and her crotch. The female then performs oral sex on you.
by thejakebush May 29, 2008
