Theory One: It's short for "girdle string." The first known reference to the item was found in J.H. Beadles' Western Wilds penned in 1878. "Around each boy's waist is the tight 'geestring,' from...
a thong
It's a man-thong.it does nothing its just a type of underwear that men wear for sex
a g-string is a kind of lingerie that only covers the vagina ( crotch) usually strippers wear it and women who want to have anal sex or sex
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