when your "doing" a chick {or guy in some cases} from behind then pull out spit on her or his back to make them think you cummed then when they turn around punch them in the nose and cum in there face
hey my dude i gave her ass the worst straw berry short cake ever ya digg.
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.