You decide to try out your power on the chiseled manly neighbor. He was the kind of guy who lifted weights in his backyard so you knew he was ripped. The car he was working on was a project, a classic restoration. You've seen him take what looked like junk and rebuild it into their classic beauty, with a few new touches.
What should you swap with him though? You could swap anything, his muscles, his height, his cock... whatever you wanted for yourself.
You didn't know if it would work, but you figured your neighbor didn't really know you, and you didn't even know his name, which made him the perfect test subject. You see him lifting weights in his backyard, so you concentrated on his muscles, and gasp as you suddenly feel your whole body swelling. Your shirt feeling tight across the chest and arms until the sleeves give way and burst. Your shorts are able to stretch around your expanding waist, but are still tight on your legs, and your feet swell painfully in your shoes until you you lift a foot and the shoe flies off forward, followed by the second one when you lift your other foot. No one seems alarmed by the change, which might just mean no one has noticed yet.
After the tingling of the changes subside, you feel your newly expanded muscles, looking a bit out of place on your 5 foot tall frame. You go to retrieve your shoes and contemplate what to do about clothes when you hear a bang from across the street and shouting. You look over and see your neighbor is trapped under the weights he was just lifting, and instinctively you rush over to help him. Upon arriving, you notice his workout clothes looking cartoonishly big on his now smaller frame, and see he's pinned down by over 150 lbs of weight. You reach down and pick up the weights with relative ease and drop them off to the side. He stands up, a 6 foot tall man with lanky proportions now and looks at you.