Pishank
When you are low on time and want to take a piss, a shit and a wank at the same time.
Damn I'm running late for work. Better have a Pishank to save time.
Pishank
When you simultaneously Piss, Shit and Wank.
"Sometimes, if I don't want to dirty my bathroom up, I just pishank into a condom that I stretched over a toilet bowl and put it in the bin"