svenking

To masturbate and ejaculate into the sink. "Svenker" can be used as a derogatory term.

John: "I just came in the sink."
George: "Woah, I didn't know you were into svenking!"

Svenking

The act of jerking off and ejaculating into the sink. It is defined as a fetish and is often paired with edging and/or gooning.

“Hey, who came in the sink?”
“It was H, man. He’s addicted to svenking.”