When a male is making advances on a female and one of the female's friends (usually female) separates the female and the male to end any chance of him "making a move." The friend usually moves the female away from the man and prevents any conversation from continuing. The friend feels that the female is too inebriated to make good decisions and has decided to make decisions for her. The termination of all conversation and contact with the female eliminates any chance of sexual intercourse with the male. Thus the cock has been blocked.

Cockblocking can be in response to fearing for the female's safety or by jealousy.

To prevent cockblocking a male may recruit a buddy to serve as wingman and distract the cockblocker.