Vertidump Share definition Flag when one does not wish to place his or her ass on a toilet seat, resulting in the dump being taken several inches above the toilet seat while standing. surprisingly difficult. dude, that toilet seat is gross!i hit that shit with the vertidump. Vertidump by J.Karo July 10, 2010 0 0 Get merch Get the Vertidump mug. Buy Now — $32.95 See more merch