Dick in the dark 

Few guys and 1 skanky hoe in a dark room each guy gets there Cock out and 1 at a time feed it to the hoe, who in return guesses who’s dick it was

That Tracey is a dick in the dark extraordinaire. Good night last night end up playing dick in the dark with that bird from the dancing up Rupert’s house.

Dick in the dark by Chris Doherty June 6, 2018

couldn't find his dick in the dark 

Someone who is oblivious, has declining mental facilities, or is simply stupid and cannot recognize obvious things or cannot take on simple tasks.

It's no surprise he gave that gold digger his ATM pin number--he's so dumb he couldn't find his dick in the dark.

couldn't find his dick in the dark by Marcoda December 9, 2011