taint bruise Share definition Flag when riding ones bike and the seat hits ones taint, the area between the genitals and asshole, resulting in a bruise. Rhonda was riding her bike today and had to go the doctor because she got a taint bruise. taint bruise by mustlovedogs1122 January 5, 2012 0 0 Get merch Get the taint bruise mug. Buy Now — $32.95 See more merch