Grumpy Mumpy Share definition Flag A person who is grumpy, either for a reason or no apparent reason at all "Hey Moyles" "Fúck off eLC" "Woooo SOMEONE'S A GRUMPY MUMPY TODAY! Grumpy Mumpy by eLCon October 5, 2005 0 0 Get merch Get the Grumpy Mumpy mug. Buy Now — $32.95 See more merch
