Brocade
The intervention and blocking by brothers and/or guy friends when an ex, spouse, or another chick like her friend is either trying to cause issues with your current chick or a chick you are trying to pick up. Or if your chick shows up at a place she just shouldn't be.

Similar to a blockade...
When my future wife showed up at my bachelor party my friends and brothers formed a Brocade at the door and wouldn't let her in.