Midpoint Fuckboi Share definition Flag When a fuckboi has not reached his full potential and is in the process of achieving his true fuckboiary . (Same applies for fuckgirls) 1st person:Rigan is kind of a fuckboi. 2nd person:yeah he is a midpoint Fuckboi Midpoint Fuckboi by Lord Stinkycum April 15, 2015 Get the Midpoint Fuckboi mug.