Go for a jog.

After going home to change into my favorite pair of short, little running shorts, I head out for a jog on the trail north of campus. Although I used to just freeball it in these shorts all the time, I decided to wear a jockstrap today. My cock is hanging so low these days, the head of my dick hangs out the bottom now. No sense getting arrested for public indecency...

Not that I'm looking particular decent, anyway. My swollen bulge bounces with every step I take. The weight of my meat pulls my jock low, exposing a crest of pubic hair where the waistband of my shorts meets my toned torso. Up ahead, the trail splits off into a park with some nice tree cover. If I head that way, there's a pretty good chance I'll be alone on the trail and can good a good workout in. If I stay on the paved path, on the other hand, I'll eventually end up back on campus. Maybe it'd be exciting to have an audience on my little run?