A combination of shitfuck and fuckton used to denote an extremely large quantity, more than a shit load or a fuckton.
How much reading do I have to do by tomorrow? A shitfuckton!
1. an extremely large, ginormous amount, bigger than your mom's ass and the fucking universe, usually used to describe an emotion or feeling towards something in a good or bad way
I love you a shitfuckton, because i'm just that awesome and a lot just isn't enough.