thongboy Share definition Flag a boy that whers thongs when they go to alton towers and takes the top off so everyone can see the thong then gets embarassed by it girl:my boyfriend wheres thongs? girl2:is he a thongboy? thongboy by emma swinbank November 6, 2007 0 0 Get merch Get the thongboy mug. Buy Now — $32.95 See more merch
