kyle: butters, i think we should talk.
butters: well sure, kyle.
kyle: don't you see this is wrong? your getting little boys spending all there lunch money on kisses. it's wrong.
butters: kyle, everyone pays for kisses, do you know what i am saying? if you got a girl, and she kisses you, sooner or later, you're paying for 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.