The dirtbagiest of dirtbag moves, take a shit in a condom, freeze it and place it inside of your anal cavity. Let it melt and have someone give you anal head. Upon licking you, you release the melted bowel movement into his face yelling surprise
Hippie: Oh man I totally 1trojanhorse'd this guy the other night
Duv: Ill your nasty
Hippie: He loved it
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.