interesting question. for me, the need just hits me, and I just feel the need to masturbate and eat my cum. Other times, when I check into a motel / hotel, while checking in, I know that I will be masturbating and I start to get a hard on as I'm checking in. Once in my room, I turn up the temperature so that I'm comfortable nude and I just relax and start to masturbate. what a great feeling.

