The act of getting up to both empty your bladder and also refill the vessel that contained the drink that made you need to go in the first place. The expression is not limited to water, as many other beverages can fall under the umbrella of the watercycle, including Big Red and coffee. Unsurprisingly, the watercycle is often referred to as being "ridden".
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)