Accordion Dick 

When a dude tries to penetrate and girls cunt with his dick and it folds up like an accordion.

Most likely the guy is drunk or really high before the phenomenon. After you accordion dick a girl, the guy has to yell, "You've been accordion dicked, bitch!" Then the sweet-ass-dude has to bellow like an accordion, "Whoooom!"

Accordion Dick by Pat N, Mark W, and E.J. January 6, 2009

Accordion dick 

An uncircumcised penis

I heard she broke up with Ralph after she saw his accordion dick.

Accordion dick by The dentist February 24, 2014

Acordian Dick

When you can't get hard so you only put the tip in, and proceed to push in and pull out, while the tip is stuck inside. Thus creating an acordian type movement with the skin.

Bruh I just got done banging this chick with my acordian dick.

Acordian Dick by Big Meat Mike June 18, 2017