frog Share definition Flag an abbreviation for 'dead frog' used as the name give to a female when she doesn't do anything during sex in the missionary position. 'Why don't you make an effort when im on top Jill? You just lie there like a (dead) frog...' frog by wimissick October 23, 2009 0 0 Get merch Get the frog mug. Buy Now — $32.95 See more merch