He asked if he could get a spot.  As I stood above him, bracing the bar as he did his series of bench presses, I noted that he kept looking up the leg holes on my loose basketball shorts.  Seeing this, my cock started to chub up, tenting out the front of my shorts, making the leg holes bigger and making it easier for him to stare up at my junk.

Once he finished his reps, I noted that he seemed tight. I suggested that he needed to stretch in order to prevent muscle injuries.  I offered to help him as I knew a couple of really good exercises that would really stretch him out and loosen him up.