Yep, mostly unplanned is how it seems to go.

Green-haired girl and he bf wanted to get it on. Fine. Wanted to fuck her anyway. He's sucking my dick, not doing bad at all! Long blond hair whipping around, good enough, but I wanted that pussy. Well, got my wish, unfortunately.

She whipped her panties off and bent over, and good fucking god, the smell... I put on my big boy pants (or rather, left them off) and went in to do my duty. The things we do fucked up and horny.