Shits and Grins Share definition Flag To do something for no reason other than to have a laugh. Jo: lets go and see that new film.Jake: why?!, its crap.Jo: Just for Shits and Grins. Shits and Grins by viperdick September 9, 2012 0 0 Get merch Get the Shits and Grins mug. Buy Now — $32.95 See more merch