The act of transfering rectal sluge from one persons browneye aka. poop shoot, to another pesons browneye using a turkey baster.

1.Yoou may use Astro-Glide before insertion.
2.Conistancy is usually watery, and the color fluctuates according to diet.
3. Can be ridiculiosly fun in groups of 3-4

*definition may also be recognized from the experimental film, You, Me, and Everyone We Know, directed by Mirand July.

Recomended eveyone try at least once!
Person a : Hey wanna get together tonight?
Person b : Sure what are we going to do?
Person a : We can poop back and forth!?
Person b : Sweet! Bring your Astro- Glide baller!
by kaydeelaydee April 10, 2009
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exchanging shit from one person's anus to another's. . . and back and forth and back and forth.

Represented by the emoticon: ))< >((
pInKpNtEeeees: what u wanna do 2 nite?
lonliguy: lets play back and forth.
pInKpNtEeeees: ))< >((
by Robby, You, and Everyone May 11, 2006
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Sounds like the motions a saw with a midget at each end would go through if they were cutting a guy in half with one (and not something related to two people talking about something).
The midgets kept bringing the saw back and forth, but it took hours and hours for them to get to the guy's intestines.
by Solid Mantis May 20, 2021
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When one person poops into another person's butthole, and that person poops back into the original person's butthole. They then continue this, back and forth with the same poop.
Here is a picture of pooping back and forth... ))<>((
by K Page January 08, 2008
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When someone poops into someone elses butt-hole, and then they poop it back into their butt-hole, with the same poop. Forever.
"Like I'll poop into her butt-hole. And then she'll poop it back... into my butt... hole. And then we'll just keep doing it back and forth. With the same poop. Forever." Poop back and forth.
by Ben & Milkey April 11, 2006
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When two people line their assholes up facing each other, and one poops into the others asshole, and then the other person poops right back into the first asshole, and this goes back and forth for as long as they want.
Bob: "Me and this girl poop back and forth regularly"

Mike: "Holy shit, does it hurt?"

Bob: "It felt like I kept sitting in mud"
by Mjriedl October 30, 2011
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when one person poops in their partners ass and then their partner poops into theirs and the sequense is repeated
Jack and Jill used to Poop back and forth for hours till jack started to stink.
by Beefkakes April 22, 2006
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