Test it on your female roommate

As your new plan begins to form in your head, you quickly wrap a towel around your waist but stay naked otherwise.You put the device in a drawer of your desk and then leave your room. You live with two girls, Kate and Emily, and a nother boy, John, but besides Kate, everyone should be at work already.
You even have to search for Kate, you just run into her.

She seems to be on her way to the shower, just like you are pretending right now. Kate looks absolutely stunning, even though she just woke up, and the sight makes your small dick grow hard again.
Kate does a lot of sport, and it shows. Shes not overly muscular, but she stays in a very good shape, and often wears her sportswear around the house. She has dark blonde hair, green eyes, and is about as tall as you, you´re a bit taller.
She´s nice, and you´ve known her for some years, you´ve moved in together with another common friend half a year ago.
Right now, she only wears a white tank top with seemingly no bra underneath it, and some sweatpants.

"Oh, hi Ethan. Did you want to shower as well? I can wait, since you´re already...naked..."

She looks at your towel, seemingly a bit confused on why you wouldnt undress in the bathroom. Your heart is racing. You cant believe what you´re about to do.

"Hey Kate?" you try not to sound as nervous as you are. If the device didnt work as it promised this could really make things arkward.

"Yeah? whats up?"

"I wanted to ask you something." You clear your throat. She raises an eyebrow, looking at you standing there.

"Go ahead dude." She smiles a bit at your visible nervousness.

You take one last deep breath, then you drop your towel. "What do you think about my dick?"

For a second the two of you just stand there. Kate fully clothed, you fully nude with your towel dropped to the floor and your tiny dick as hard as can be.
Then Kate begins to laugh.

"Oh my god, are you serious? I dont know why you would show me this, thats so embarassing! Dont you feel pathetic showing this to a girl? I wish I had known you had a dick this small earlier, oh my god. Oh I gotta tell my friends about this. You know on second thought, I´m going to shower first. But you can go ahead and make breakfast. Showing me this...what were you thinking..."

And, still laughing to herself, Kate vanishes into the bathroom and slams the door shut, leaving you standing there, humiliate, thinking about what she said.