rude slang To interfere with or prevent a man from having a sexual encounter. That girl was totally into me, until you guys came along and cock blocked me!
vulgar slang Interfering with or preventing a male from having a sexual encounter. "Cock" is a slang term for a penis. That girl was totally into me, until you cock-blocking fools came along and ruined it!
mod. [someone or something] interfering with a man’s activities with a woman. You’re just a cock-blocking playa-hata.