GDYM 

GDYM means: Go, do your mom.

Bob:Your nub, Joe!
Joe: Shut up and GDYM?
Bob: GDYM??????
Joe: Go and check it from Urban Dictionary!

GDYM by D33 J4Y May 14, 2011

GDYM 

Go Drink Your Milk

use when some one is crying like a little bitch.

boy: my life sucks nothing ever goes my way!

A Man: GDYM, go cry to someone who cares

GDYM by Leon Jackson 2012 June 1, 2011