A person who retired into being retarded. A political act in which person represent themselves as being retarded, when in truth they are not. Something akin to putting a blonde helmet on to create a force shield of stupidity around oneself.
(1) WTF. Since when have you become a retardee?
(2) When returning broken goods to the store, or to Amazon.com with the words "I don't know what happened, ... I just turned it on!?" one becomes a retardee.
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.