A female of mediocre physical attributes. Often used in context of slash (an attractive female) and backslash (an unattractive female). Derived from UNIX definitions (i.e. \ | /).
In college, Judy was slash and never considered pipeline. Her room mate, Audrey was as pipeline as you can get.
by artifact of crunk August 21, 2004
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When you masturbate so hard that you fart .
Man I was crankin one out the other night and I pipelined so bad I had to go in another room to finish.
by Grit Sharpenson January 15, 2016
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A Pipeliner is where somebody takes a BC Powder and drinks a Redbull at the same time. Closest thing to being on Amphetamines you can get with without it showing on a drug test.
If I work a 18 hour shift I always have a Pipeliner to keep me going!
by Kalesile June 28, 2018
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For when you or a friend gets dragged into a community you didn't want to be dragged into.
James: Have you heard that Daniel got pipelined?

Mark: Yeah bro he played one game and now he's a furry.

James: Yeah dude pretty sad.
by Trigerr December 28, 2022
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A term that "lads" use to string along an innocent girls. To keep them dangling on like a carrot while they speak to more than one girl and if else fails they can return to the other girls in the "pipeline" and talk to them.
I'll still keep talking to Louise to keep her in the pipeline if all else fails"
by Chuckle city bebesssss February 24, 2015
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When two gay men do their version of scissoring. This involves them criss crossing their legs and touching buttonholes.
Did you hear Donnie and his boyfriend were pipelining? Yeah they made their buttholes kiss. Donnie loved it.
by Nasty Buttler 69 April 9, 2021
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A pickup line that has a 70% chance of getting someone laid. Pipeliners are usually used by men since women don't normally have a hard time getting men to sleep with them.
Remember that chick from the 40/40 that was being kinda standoffish? yeah, so i served her a pipeliner and she can now tell you what my dick taste like?

Nookid: Hey, come here often?
Hot Chick: Not interested.
Nookid: I'm an upcoming rapper who is currently cutting a deal with def jam.
Hot Chick: I know this cool trick, whip out your dick and i'll show you.
by Nookid May 25, 2010
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