It's listed in the codex, and when Kiro drinks it, it says:
How does/ how fast does this work? I fill like it'd be trivial to implement now that we have fluid simulation.
You watch with a wicked grin as Kiro’s eyes widen, her stomach gurgling... and her balls swell, surging outwards so quickly they nearly tear her clothes open. She doubles over, groaning as her erection grows, spilling out of her leotard to THUNK against the underside of the table. “Y-you little bitch,” she growls, looking up at you with lust-filled eyes, “O-oh fuck. Just... take me back home and fuck me, will ya? I gotta cuuummmm.”
How does/ how fast does this work? I fill like it'd be trivial to implement now that we have fluid simulation.