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.