I've had to pull over in the car to jerk off with my dick hard, driving me crazy wearing a shirt and tie. Here he wisely had his pants/underwear fully down, and his shirt (far enough) up, and his tie out of the way. Still, he needed a paper towel to ejaculate onto and wipe his penis without any mess. It's happened to me in the past. Ever since (and in the present/future) I'm always ready.