I Need Both
I want to take a male feedee and a female feedee... I want to stuff them both to the gills then bounce them together like balloon dolls to make them kiss and jiggle.
After that I take the female feedee and attach her mouth to the male feedee's cock. Next, I secure a funnel into the mouth of the male and begin emptying melted icecream down his throat.
His eyes roll back as he feels his stomach swell against her face, wearing his slut pump. As she happily sucks his cock, and his belly descends further and her nose digs into him. He pops (cums) and the female feedee guzzles gleefully as he moans and moos like a cow.
Perhaps first I'll set up a mirror. I'll make her swallow a tub of mentos and guzzle a can of soda before latching eagerly onto his dick. Then he can watch her belly balloon with his as he empties his seed into her growing gut.