Thoughts of getting it on with a big boy in the shower, he puts his dick in, and suddenly there's a feeling of something warm and copious being pumped in. Did he just... Already? Oh. Turns out he's just emptying his bladder and didn't feel like pulling out to take care of that.
Fuck he's got a big bladder...
(Yeah he could have just taken care of that before we started but he finds this to be a lot more fun. He'll work on busting a nut soon as he's done!)