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1.
The guiche is the bit betwixt your asshole and your nutsack. Also know as the perenium in scientific circles
The cheeky bint tickled my guiche
by Mac October 12, 2004
 
2.
The piece of skin that separates a man's anus and testicles.

It is becoming a popular area to get pierced.
"Oh noes! Steve ripped off his guiche by accident!"
by invictus February 19, 2004
 
3.
A piercing, and/or the jewelry inserted into the piercing, in the area at the base of the ballsack, forward of the anus
The diamond-studded guiche complemented the symmetry of his nipple piercings whenever he lifted his legs wide.
by Clark November 07, 2003
 
4.
(noun) Pronunciation (GEESH - short "G") The area between the scrotum and the anus (on a male, obviously). Often mistakenly as geesh (pronunciation of "geesh" is "jeesh"). The guiche is sometimes pierced, usually front to back, but it HAS also been known to be pierced horizontally.
"I'm going to get my guiche pierced" (which IS actually done!)
"He/she fondled my guiche while he/she sucked me"
by Shawn Collins24 January 05, 2008
 
5.
The area between a mans testicles and asshole.
Steven got his guiche pierced.
by Slice January 29, 2003
 
6.
A smelly, patch of dirty, hairy skin that is between the nut sack and the shit-hole.
My guiche got pierced with a dirty, rusty needle.
by Richard Longwood July 12, 2004
 
7.
The bit between a man's balls and his arse-hole.
After excretion, wipe from front to back, in order to avoid soiling of the guiche.
by Stouffer November 07, 2002