Crackalackin’ Share definition Flag When your jeans are too low, and your butt crack shows.Showing one’s butt crack Mom to daughter: Maria, pull up your pants , you’re crackalackin’. Crackalackin’ by Gregt1000 November 25, 2017 0 0 Get merch Get the Crackalackin’ mug. Buy Now — $32.95 See more merch