Definitions by Monsieur Cairo

Slopcock

noun: a penis that has recently been blown or involved in penetration.

"Man, that girl was on the rag and didn't tell me. Talk about a slopcock."

noun: a penis that has recently been given a blowjob, or involved in penetration.

I met this girl in the bookstore, took her home, and ended up with a slopcock. She was amazing.