The theorem that someone has watched so much porn in their early teens that once they have matured, masturbation and simple pornography does not arouse them.
“Bro Moyers you asked that girl for nudes?”
“Sorry man, x-vids just ain’t cutting it”
“Man you weren’t lying, you do gotta old man dick”
by GGuthrie February 17, 2018
Get the old man dick mug.
Is the condition - which generally affects older malse, post mid life crisis. Symptoms include clearly overcompensating for lack of plausible "mojo". Being an absolute douche bag yet being blissfully unaware.

Old man short dick disease can generally be identified by his balding head, prestigious car such as a Lamborghini, Ferrari or Maserati and is at most times accompanied by a perky blonde in her 20s.

Yet don't be fooled this is the full extent of this mans alluring qualities.
When you drive past that Lamborghini and see an 58 year old man, generally unatractive and balding. Promo girl in the passanger seat with a great boob Job - you can now think to yourself

'old man short dick disease'
by GeekSheek June 23, 2012
Get the Old man short dick disease mug.