You decide to switch heights with Paul; it might be nice to let your friend try being a little taller. Besides, you like the guy, but he's exactly observant. You might be able to get away with him thinking it's a growth spurt if the ring works. Big "if", but you'll try anyways. You close your eyes, think of Paul and his height, and kiss the ring.
You don't feel anything. You open your eyes and look down. Everything seems the same. You head over to the mirror, and look at yourself. Wait... maybe you are shorter. Yes, you're definitely a couple inches shorter. You grab a tape measure to be sure. Yes, 5 foot, 5 inches. Paul is even shorter than you thought. Er... WAS even shorter. You're a little confused though. Wasn't the ring supposed to trade something random as well? You look over your body, when you suddenly sense what's different. Nervously, you lower your pants, and stare at your boxers. The bulge filling them out is huge. Way more than your 4 flaccid inches should equal. You pull your boxers down, and see a behemoth. It looks like Paul was popular with the occasional girl for more than his good humor and great smile. You see 8 inches of flaccid, uncut dick hanging out. Who knows how big you'll be when you get hard? You're starting to rise to attention but you quickly pull your boxers back up.
Switching heights with your friend is one thing, but this feels a bit too personal. You have to switch back right now, Paul might not notice the height but he would definitely notice this. Any guy would. You focus, kiss the ring, and nothing. Right. This only works once a day. Should you call Paul? Maybe he deserves to know? You're very tempted to take a second look but feel guilty as soon as you think that. Crap. What now?