Melly Up Share definition Flag To kill a spider with your bare extremeties, because you're bigger than a spider! 'Oh man, you should have seen the size of that spider! Usually I'm scared shit of spiders, but I had to Melly Up because I was by myself.' Melly Up by electricsauce September 25, 2011 0 0 Get merch Get the Melly Up mug. Buy Now — $32.95 See more merch