The act of shutting off the water valve to a toilet, completely draining all water, then leaving a turd in the bottom of the bowl.
"Phillip gave me the keys to his estate and asked that I mind his English Mastiffs in his absence. I fed the hounds, ate his scones, and left a Deuce in Dry-Dock knowing this would elicit a chuckle from Phillip and scorn from his mistress."
When you Wet Dock with your friend in sub zero (Celsius) temperatures, subsequently the urine freezes, creating a bridge between you and your friend. Follow it up with a high-five.
Luc and I were up snowboarding, it was -25, he had to pee so he dropped his pants, and as we were wet docking, his pee froze making an arctic dock.