As class ends you come up to Brad and tell him that your cock has magically grown somehow. You are not going to tell him about what you did.
I am 18 inches soft now.
How much did you lose?
It must be about 8 inches.
Amazing that is about how long I estimate that I have grown. Do you think that maybe somehow something transferred your cock to mine?
That is impossible!
I saw the thought go into his head.
But how could that have happened?
Could someone be mad at you Brad?
Everyone wants to be me!
I love that cocky attitude of his. Makes it so much more fun to do this to him.
Well I don't know if this would work but what if I rubbed my cock on your cock area do you think it would take this huge thing back?
That is so queer.
I am begging you I don't want a cock this size.
I AM NOT A FAG!
Me either but I am getting scared having this thing hanging here.
Brad thought about it and then said ok just rub it on my crotch. Lets go to the bathroom.
We headed there and found an empty stall. We both dropped our pants and I rubbed my cock against his crotch. I made his cock get smaller as I did.
OH NO I SCREAMED. I AM 3 INCHES LONGER. AND WHERE DID YOUR COCK GO?
Brad wasn't fat but it looked like a fat man's soft cock hiding inside of his abdomen.
What if you sucked my cock.
Oh no I ain't doing that.
Someone is playing with us. Just suck it a bit see if that works.
He got on his knees and started sucking. I made his cock get hard and it poked out.
It's working! Maybe if I fucked you it would go back to normal.
Oh god! Brad really wanted his cock back but he didn't want to get fucked.
OK but do it quick.
I did. Brad turned around and bend over the toilet with his bare butt facing me. With one strong thrust I was balls deep and there were tears in his eyes.
Now my cock had stared to get hard but it wasn't nearly fully hard. It had grown to 2 feet in length and as I thrust in him I could feel his heart pumping blood to his invaded ass.
As I thrust I got longer and longer and thicker and thicker as did Brad. His cock grew and grew and grew. As soon as I came in his ass his cock was a full 11 inches long.
I pulled out of his ass and his hole was gaping. It would never be able to fully close again but at least there was an 11 inch cock hanging there.
It wasn't until the next day that Brad would realize that it was short lived. The next morning his cock was back to the innie that it was the previous day when we were in the toilet.