Oh, yeah!

You slap your end of the spy portal on your bathroom wall and sit down on your toilet. Even though nothing is going to go in there, it will make it easier to contract your muscles the right way.

You watch Shari's reaction as you pass gas through the portal into her mouth. She shifts a little in bed, her wrist brushing her breasts and her nose wrinkling slightly, but otherwise no change. Then you start pushing. You had one too many burritos for supper and they want out. Suddenly, Shari's eyes snap open as your poop starts to fill her mouth. She screams through her nose, knowing what she's tasting but not knowing why. You push some more, watching Shari sit up as your excrement is **** down her throat. Right about the time you empty out, you see her start to make heaving motions. You make the portals on your anus and her mouth disappear just in time to avoid getting an enormous backflow of Shari's vomit up your ass. Instead, Shari loses it all over herself, as her bare chest and stomach covered by the remnants of her last meal and the waste product of yours.