A game that can be played at any time with friends in which you "claim" a hideous woman as your own. When there is a group you call "double dibbies", "triple dibbies", etc. Some places are off limits to the game of dibbies, for example, Wal-Mart, the state fair, thrift stores, etc. (Basically anywhere that you would basically not stop calling dibbies)
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.