Happens to me all the time

And getting out to poop is much worse because now you have to deal with trying not to fall of the toilet seat because your ass is so wet - and I cannot say that any less sexually and I'm sorry

And then you go after the shower and your entire body is clean except for your butt •-•

There is an entry on urban dictionary, something like 'paddling', it's when you shit on the drain and step on it until it goes down the drain.