When two or more people (usually women) block up an aisle at a store to gossip about the usual crap, resulting in annoying all other customerstrying to shop in that particular aisle.
two ladies shopping in the same aisle at their local grocery store:
Lady 1: "You look familiar, is your name Cadance?"
Lady 2: "Yes it is, Oh my god! Heather is that you?"
Lady 1: "Yes!! Oh my god! Its been 5 years! How have you been? How's.. blah, blah, blah....."
Lady 2: "Blah, blah, BLAH, blah..."
A couple turns into the same aisle:
Husband to wife: "Damn it!! looks like the cackling hen society is blocking the f*cking aisle again!"
Refers to a killstreak in Call of Duty: Modern Warfare 2, where a UAV (unarmed aerial vehicle) would indicate the location of enemies on the minimap. Similarly, cracking the UAV means looking for woman to have sex with.