"Da-"
"Too late, Jake." Lauren laughed through the phone, glad that her plan would work, "you get both! Every time you hear your name, your dick will get erect and grow another inch. The only way to get rid of your erection is to either masturbait, cum into another boy's mouth, or cum into another boy's ass. Your balls will grow to match once you can no longer get the cum out, so you have some chance at flaccidity. The pleasure you receive will go up as you grow, meaning that later even just poking it will bring you to your knees. You can still have sex with girls, I guess, but you will not get flaccid after. Oh, and everyone except for you and I will think this is normal and you will go to school in really tight pants, and change into a skirt once the pants break. No one will care what you wear." Finishing her long winded curse, she hangs up and heads to school to see how her ex does, proudly patting her horse lower body that she got trying to obtain the curse.
Jake sat at the phone for a bit, scared of what Lairen just did. 'Wait, the curse is bullshit. I'll just go to school and show her how bullshit it is' However, even as he thought that he was naked, rooting around his sister's room for pants and a skirt.
"What are you doing in my room?"
Crap! It's jake's sister. "Um... Nothing?" Jake replied, wearing a pair of pants that barely went to mid- calve and left very little to the imagination as to what he was packing in the crotch and holding a skirt that would fall to his knees. "Jake, what have I told you? I'm fine with you wearing my clothes as long as you have permission" hearing his name, jake felt his four inch dick harden to it's fully erect seven inches - and then keep growing to eight. Not having any loose fabric to tent, his dick just hardened, tried to straighten, and settled for being hard and straining at the fabric. Jake thought for a moment, if the curse is real, he can wear - or not wear - whatever her wants. Watching his sister leave, he awkwardly got down and found a pink shirt with a unicorn on it. Putting it on, he found that it was pretty tight on him and left his stomach in the open. He still had a raging boner, and remembered that he could get it down by rubbing. He somehow managed to pull out his dick, and starts stroking. After a minute, he cums, spraying his semen onto his sister's bed, clothes, and wall.