Night

It's the middle of the night. You are lying next to a large rock you found, taking a well-deserved rest from walking around in the unforgiving desert. You didn't manage to find anyone to fuck today, so you'll have to settle with masturbation. You pull your cock out from under the linen covering your body and begin to jerk off. You're three minutes into your jacking session when you are interrupted by the sound of shifting sand around the corner.