wide mouthed frog Share definition Flag a woman with a wide gash hay i did your mum last night, she has a gash like a wide mouthed frog. i thought i was shaggin a welly. wide mouthed frog by mr b allbags October 9, 2008 0 0 Get merch Get the wide mouthed frog mug. Buy Now — $32.95 See more merch