kendall rump Share definition Flag noun. an ass that is plump, firm, and bubbly (not unlike kendall's own tush) Man #1: Yoooo look at that girl's ass! Man #2: That ain't no ass dude; that's a kendall rump! kendall rump by hollaaabackkk March 4, 2009 0 0 Get merch Get the kendall rump mug. Buy Now — $32.95 See more merch