Someone who studies and specializes in the male organ.
A
doctor that checks up on the
testicles and has to look at someone's dick for eg diseases (
STD's), or misshapes.
A plastic surgeon that specializes in operations to the male organ.
"Man, I had
sex with this woman, and now I start to have a rash on my
penis."
"Visit the Dickologist".
"My
penis is too small; I can't pleasure my wife"
"I heard the dickologist at 49th street can lengthen it with a small surgery".