Homosexual intercourse. When a gay man puts his unit in his partners ass, you can probably assume it's going to get shit on it.
"Dude, I walked in John's apartment last night and seen his gay room mate shit dicking his boyfriend. I'm scarred for life man!"
by Meaty Pablo April 20, 2008
1 more definition
Using one's dick to push in the shit of another. Primarily used to describe the "male" in a homosexual relationship ; Shit-dick, Shit-dicker, Shit-dicked
"Man that stiltzdaddy has been shit-dicking a TON of dudes lately."
by the guy who beat up your roomy March 09, 2010