To masturbate onesself to and emission, usually of great and satisfying proportions.
masturbate, jerk off, rub one out, ejaculate, beat off
I saw this hot girl, but my mother was with me, so when I got home, I went to my room and blasted off by pulling the trigger on the purple headed yogurt gun.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi