i.e. a cigarette. Used in a sarcastic way towards non-smokers to indicate that the smoker could care less whether or not others accept his/her smoking habit. See also cancer stick.
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.