Make my dick smaller

Well I was already at attention with a cute naked girl in front of me. If she really wanted to get off on this whole 'I'm a genie bullshit' she couldn't make it bigger but she definitely could make it smaller with a bj, her pussy, her ass, or option d for all of the above.

"Your wish shall be granted" she smiles back at me.

I look back and forth at her and my dick waiting for her to start working it, but she just continues to smile.

"Are you going to make it smaller?" I ask bewildered.

"Why don't you give it a tug or two" She mischievously smiles back.

Well I mean I guess I can jerk off to a hot naked girl in front of me. I grip my dick and prepare to start jerking, but as soon as I grab it I start to erupt. It was the longest most pleasurable orgasm of my life. But when I had started my erection was 6 inches, now it was 3 inches. But it was a hard 3 inches. It was rock hard. It was easily less than 3 inches around as well. Like I could stick my rock hard erection in a toilet paper roll and it wouldn't touch the sides. Or poke out the top.

I guess fear or post orgasm made me flaccid and now it was a tiny nub. Almost not sticking out of me. The fuck did she do. I looked up and she was gone.