Could be used as a derogatory reference to a weird action ( licking underwear stains ) or for calling a person out making reference to they may be a stain licker of sorts
Did you see that chic at the party pick up that dudes underwear and lick the stains?...total freak id say who'd have thought someone so hot would be a stainlick
by Leecifer#1 December 23, 2022