Alaskan Pipeline 

A person that partakes in the act of defecating into a snow bank to freeze the log for use as a dildo in the future. Some may use condoms or saran wrap to reduce mess and health complications.

A rich and hearty diet is necessary to become a champion Alaskan Pipeliner.

Alaskan Pipeline by Frank Snowl December 18, 2012

the Romanian pipeline 

Much like the Alaskan Pipeline, however in the day prior to the shitting in the condom and freezing in the freezer, eat a diet consisting solely of corn. This is to create a pipeline ribbed for her pleasure.

What did you do last night?
The Romanian Pipeline.
What? The Alaskan Pipeline wasn't good enough for you?
Last time she complained about how the Alaskan wasn't doing it for her.

the Romanian pipeline by freewilly32 August 27, 2009

Piper

A person who talks alot; one who is inclined to informal chatter, generally exaggerations or fabricated stories, but not necessarily.

"Sorry I am so late, I got caught up with Jay; you know he is such a piper."

Piper by bakerjadey August 11, 2008

half-pipe 

noun, meaning a penis that is not fully erect, but half-way.

It was horrible when I had to walk in front of the class with a half-pipe hanging out.

half-pipe by Jonathan and Carl January 9, 2004

iraqi pipeline 

lubrication of a woman's anus with WD-40 (preferably with the straw inserted)... followed by repeatedly having anal intercourse over the course of several hours.

"Man, Erica was keeping me up all night asking for an Iraqi pipeline!"

iraqi pipeline by rolling stoned May 2, 2008

Dutch Pipe Cleaner(s) 

Dutch Pipe Cleaner - When the woman places her fingers inside her Vagina, and then a partner motions her arms in an attempt to cause arousal sometimes resulting in Orgasms. The female version of a "Dutch Rutter".

When Harry met Sally, she demanded a Dutch Pipe Cleaner(s), so he wouldnt think she was too slutty.

Dutch Pipe Cleaner(s) by Evenpressure March 10, 2009

Working the pipes 

3 dicks, one girl.
3 boys stick their dicks in 3 different areas or holes in the girl. (mouth, ass, pussy)

Zach, Kyle, and Tyler were working the pipes on Kylie.

Working the pipes by TWO brothers fjdjfk November 29, 2009