Free use? What does that even mean?

The first thing you noticed was the effect Dennis had put on you.

"humanoid: gender reversion, sexy, personal preferences, physical change only. Status: 100%"

Not a big surprise there. The bigger riddle was the next sentence.

"Female humanoid: Free use, unaware target. Mental effect. Status: Active"

"When did that thing come from," you said as you glanced around the room. Nobody was in here after all. You shrugged as you shuffled to make yourself more comfortable, leaning onto the counter with your elbows as you spread your legs. A cock was pressing softly against your asshole, gradually spreading it apart, a pair of hands holding on to your hips, pressing their body against your butt.

"I swear I have heard about free use before," you muttered before you gasped as the dick in your ass began thrusting harder and faster, making it hard to navigate the program on your phone. "Isn't that just where people get to fuck someone without them caring about it? Bit weird, but I guess it's a power trip of sorts," you say with gritted teeth at the rough ass fucking before the sodomy stops for a second.

A moment later, you find yourself straddled over a body laying on its back on the bathroom floor. You feel the dick and help it slip inside of your ass and start rolling on top of it. You keep your phone in one hand as you lean your elbow onto a man's chest in front of you, lost in the screen. "Let's see... oof," you say as you try to write a counter to end the active effect, but you give up as the movements of your body and the sensations coming from your ass was very distracting. "Fuck, I'll deal with this in a minute," you say as you find your rhythm.

Within a few minutes, The dick slowly retracted from your asshole, leaving behind a trail of cum bubbling as your flexible asshole takes a few seconds to tighten back up again. "Whoop," you say as you find yourself rolled over onto the floor for a second and you do your best to get up on your knees.

The app on your phone pinged and you noticed a new effect had been added to the list. "Aaargh, where are these coming from?" you say as you start sucking on a cock. You tried holding the phone up to see what the app was saying, at the same time as you were sucking on the wet dick and cleaning the cum off of it.