I pull my foreskin closed so the cum gets collected in there, then I waddle over to the bathroom and release it in the toilet. After which I clean my dick with a bit of toilet paper, and I place a bit of toilet paper over my dick to catch any semen still dripping out. The only downside is that I can't really continue jacking at full-speed at the end, so if I'm being really degenerate I just let it fly everywhere and clean up with a fuckton of toilet paper, possibly a shower.
