Double dicking is the action of two straight males taking a phallic object, placing it against their genitals and humping it, symbolizing the insertion of their penis into the partners penis. Because this is impossible, double dicking acts as a vessel for these sexual urges.
Double dicking is known as the ultimate male-male sexual experience.
Cassius: Hey Ip, tryna' do some doubledicking?
Ip-Man: Hell yeah, grab the body pillow.
When two men have there dicks out and try to shove their dicks into each others urethra. There are championships for this and the current champion is "Uvuvwevwevwe Onyetenyevwe Ugwemuhwem Ossas".
Tim: Did you see Pornhub's new double dicking video?
Leo: Yeh I cummed like never before.