The art of being destroyed falling off a skateboard - a successful flapansmack must contain slams at two different bodily angles or more.
Flapansmacks are highly painful to experience and as such are very much a spectator sport.
Also referred to as smackanflap, slapansmash.
Ooohhhh! Flapansmack! He isn't getting up from that!
That slapansmash gonna make him poo in a bag from now on!!