slip slop slap Share definition Flag Having sex with a morbidly obese woman. Last night I was at the pub and I hooked up with this fat chick and took her home and gave her the slip slop slap treatment. slip slop slap by AussieKent July 23, 2014 0 0 Get merch Get the slip slop slap mug. Buy Now — $32.95 See more merch