Faptimus Prime 

A masturbating machine, who can supposedly go for days; someone who tends to masturbate more than usual.

I found that rock hard towel under your bed, you must be a faptimus prime.

Faptimus Prime by ErinIsTheGawdOfMunchingCooge February 6, 2010

fartimus prime 

the prime of your fart, normally in the middle
how to spot it: when its more powerful, louder and stinkier

person: *farts*
person: i had a really good fartimus prime there

fartimus prime by Ur mum is a hobnob March 13, 2021