Sinkling
When your friend Mike pisses in the kitchen sink that is still full of dishes.
I walked out of my room and Mike was sinkling while eating cashews.
sinkle
The act of pissing in a sink.
Frat guy #1: "Man, I've got a take a leak so bad, but if I get up and go to the bathroom I might miss a shot of Paris Hilton's boobs or something."
Frat guy #2: "Dude, just take a sinkle in the kitchen. You can watch the tube from there. I do."
Frat guy #1: "What?"
Frat guy #2: "Dude, just take a sinkle in the kitchen. You can watch the tube from there. I do."
Frat guy #1: "What?"
sinkle
To urinate in a sink
I had to sinkle because all the toilet stalls and urinals were occupied at the moment.