trouser weasel Share definition Flag someone who, be it woman or man who loves to be in a mans pants , and to find the cock inside the trousers, man that girl sure is is a "trouser weasel", she's been in every guy here's pants trouser weasel by imbent May 6, 2009 0 0 Get merch Get the trouser weasel mug. Buy Now — $32.95 See more merch