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Unisex word synonymous with spaba, nifkin, chode, or taint. The piece of skin between the balls or vag and butt-hole.
1) After I pulled out, my ejaculate slowly dripped down her gueech.

2) If you don't shut up I'm going to stab you in the gueech.
by Deuce Baggington October 31, 2007
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