Yes

I give in to the feeling, and in an instant I feel different - vaguely like a God becoming a mortal. Like I'm now made of flesh and bone.

Shelly, however, squeals as she floats off the couch and into the air. "Oh, my God, are you seeing this?"

"Watch out for the fan," I say.

I watch as she swims frog-style in the air and tumbles around in delight. But I gasp and look away as she flips upside down and her camisole slips to reveal her naked breasts.

She hesitates and tries to pull it back down her body, but it looks as if something struck in her mind. Her blush turns into a smile, and, while looking directly at me, she lets the camisole go. It bunches up around her neck, and she tumbles some more before the camisole slips back down again.

I feel myself getting hard. It's a dream, nobody else is here, and my sister just showed me her tits, so why am I so embarrassed?

She notices the bulge in my pants and doesn't say anything to me but only grins.

"What if I could - " she says, and with a wave of her hand the TV disappears, then reappears again. Then water floods the room, wetting my feet, before disappearing again, and everything is dry as if nothing happened.

"This is so fun!" she says.

She turns to me, and eyes my whole body. But turns away. Sits in silence.

"Can I ask you, something, John?"

"Yeah?"

"Uh - do you... have a crush?"

The heat is sweltering in my t-shirt and shorts. I had already moved the blanket to cover the bulge in my pants from earlier, and I feel it rising again. I can't possibly be thinking of this. She's Shelly, my sister.

"I - yes," I say. When she doesn't reply, I add, "her name's Emily."

"Okay," she nods. "That's good, that's good."

It takes a while before she speaks again. "So, do you... masturbate? Well - I mean, I know the answer to that. Everybody does. But, do you, like, um, masturbate while... thinking of her?"

I feel the words **** in my mouth. "I - why? I mean, yes, sometimes."

A distant beeping starts. It seems like we both know the world is slowly fading away, that all this is going to end. I feel regret, huge regret.

"Well, uh," Shelly hastens, "how about me? Do you - uh - masturbate while thinking of me?"

The world is turning into white.

"I - I -"

The sun is shining in my eye. My phone shows 8:00 am. I'm covered in sweat even though the window is open for the autumn air. There is no way that just happened. I shrug the thoughts off, because the heavy pull of regret is getting to me. I head into the shower. I've never masturbated while thinking of Shelly. This is the first time.

When I leave my room, Shelly is already having breakfast. Mom is preparing toast, dad is reading the papers. Shelly and I make an unnaturally long eye contact as I approach the table.

We eat for a moment, before Shelly casually says, "John, do you have a crush?"

Dad hears and lowers his papers and says, "you have a crush?" Mom rushes in to listen.

"I - no," I lie. "Haven't found one yet."

Shelly turns back to her toast, her expression unreadable.