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trans-alaskan pipeline 

Two people/animals put each others assholes together as if their assholes are kissing, then one proceeds to shit from their asshole into the other asshole without breaking the pipeline and letting shit fall out onto the floor.
Leroy and Lafonda performed the trans-alaskan pipeline because Lafona was anorexic and never had to shit, so she wanted to borrow some of Leroy's.
trans-alaskan pipeline by Se7en November 15, 2006

dirty piper 

When you cum in a girls vagina on her period and then perform cunnilingus after cumming.
Ashley was a freak, I gave her a dirty piper last night.
dirty piper by Cs193 May 19, 2017
ay, papo, tienes piedra?
piedra by dcutt April 29, 2006

piledrive 

Piledriving is when you're cock is so big you are actually slamming a chick's organs while fucking.
Hey Vinnie, I was piledriving the brown bomb last night!!!
piledrive by Sherby McGee March 28, 2003
Fucking amazing arm bicepts, word used but most canadians
" dude! you have huge pipes!"
Pipes by Loz_von_Banshee April 11, 2007