"I'm just a delivery guy," you say. "This crazy guy showed me his tattoo, then turned me into a jock strap!"
Kevin rubs his jaw. "Interesting. Didn't know Coach Allan had it in him. But then again, he's been been soaking up a warlock's spunk for two years and has my name upon him, so it's not out of place for him to be my familiar, or throw one of my spells..." He glances over at you. "I'll make you a deal. I'll let you go, so long as you get my familiar back for me."
"How am I going to find him?" you ask, confused.
"Oh, that's easy," says Kevin. "You use a divining rod." He gestures to your cock. "Every time you point towards him, it'll get stiff and quiver, until at last you wear him and he turns back into my jock strap. Like he should be."
This is just insane, but Kevin gives you some clean clothes and you get dressed. He mentions something else, "One other thing, I believe in both rewards and punishments. As a reward, your divining rod will get an inch bigger every hour until you turn coach Allan back into my jock strap. As a punishment, well, that's the punishment as well. Have fun, and good luck!"
He pushes you out the door and you wander around the campus, occasionally getting an erection as you face west, but you just brush all this off as insane and go home, falling asleep exhausted on the couch.
You wake up hours later with a raging boner as you roll over and then you wake all the way up. Your nice seven-incher from before is now sixteen inches long at least and standing at attention as you face west.
Holy fuck! It really is a curse!