Detroit Grab Bag Share definition Flag After you have sex with a girl you knock her out and then steal the rims off her car. I was with this girl the other night and gave her a detroit grab bag, bet she didn't see that coming. Detroit Grab Bag by jesustittyfuckingchrist April 22, 2009 0 0 Get merch Get the Detroit Grab Bag mug. Buy Now — $32.95 See more merch