Top Definition
Unlike a cock block, when anyone can jump the gun on you. When you're scouting a girl at a bar and your bro jumps in front of you to kick it.
Mike to Phil -"You see that hottie in the blue tank top over there by the bar? After I take a piss I'm on it."

**Mike goes to the bathroom and comes back to find his buddy Phil all over Jenna in the blue tank top**

Justin to Mike - "Oh man did you see that? Phil just layed a Boston Cock Block on you. Harsh!"
#cock #block #cock block #traitor #friend screw
by Zaphod Beebs June 03, 2010
1 Word related to Boston Cock Block
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.