mouthy little cunt Share definition Flag A person, not necessarily small, that talks a lot of greese, or bullshit as you'd call it. ' it's basically Jamie, he's a mouthy little cunt isn't he? ''Yeah, screw that mouthy little cunt.' mouthy little cunt by Gobblegangerbanger July 16, 2015 0 0 Get merch Get the mouthy little cunt mug. Buy Now — $32.95 See more merch