Zomped has basically the same meaning as owned, or pwned.It means to be beaten very very very badly by something or some one, to to beat something or some one very badly, to an embarassing level.
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.