Fuck machine is a reasonable mutation for anyone who needs to be aroused to make their combat better (fist users, etc) as it grants the ability to fantasize about fucking and get turned on almost at will.
Fuck machine is located in Maas Neotek, in Baumann-Ritchie Club for Gentlemen on the topper-most floor.
This mutation grants three commands:
fant*asize - Using the power of perverted thinking to get turned on. engorge - Grow a new penis if yours has been ripped off, or growing a first one if you're female (will replace your vagina). cum - Get your rocks off RIGHT NOW. Does exactly what it says on the tin.
The mutation also gives you an extra +4 to your fuck, and +1 to your cool. As a side effect, your breasts/genitals will be a good amount bigger in your description, as well.
Fuck machine gives -1 to climb.
When you mutate you will be given an additional line to your description:
His/Her genitals are obscenely engorged.