Teach them about masturbation...

"Yeah, now," I say, motioning towards the binds, "Do you mind untying me?" she smiles as she walks closer to me, her cock swaying as her hips moved. She leaned over me, reaching for a bind slightly out of reach, her breasts inches from my face. I feel blood rush down to my dick. The alien noticed this.

She chuckled, "I see you are eager to get started." I blushed, her gaze leaving tingles across my skin. "Now, let's get started. Show us what you usually do to get rid of your erection."

"Okay..." I say, spitting into my palm. The three of them watched as I started sliding my now slick hand across my hard cock. I feel tingles, their eyes watching my every move. I make a rhythm across my member, making a small fapping sound with each stroke.

As they watch me, I watch them. Their own cock hardening slowly. They stand next to the table, which I'm still on, and start matching my strokes. I start to notice their more... prominent features...

The first one, the one that has been speaking to me, had much shorter hair-tentacles things. This seems to be the only little thing about her. Her breasts were DD, at least. Her cock was gigantic, twelve, maybe thirteen, inches long and very thick. She was had a smile as she stroked her cock with both hands.

The second one was smaller, probably younger, too. She looked twenty by humans' standards, but the rest of her body showed otherwise. Her breasts were small, b cup at best, and her dick was nothing special, maybe four inches. Her body had deeper curves than the others.

The last one freaked me out a little. She stroked two dicks, both her own. She was the loudest, moaning as she stroked. The whole sight got me on edge, in a good way. My own pleasure sky rocketing as I watched them. Needless to say, I want them. I want more than what my eyes can take in.

But who should I choose?