Is a 6 pack covered with a layer of fat. Typically, found on people that eat to much the insulated 6 pack protects against loss of heat or the intrusion of sound. The insulated 6 pack is believed to be the reason why when fat people fart it mimics the sound of a deflating ballon.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.