This is a person who is so vehemently in denial about Barry Bond's use of Enhancement drugs, that hed beat the crap out of someone for saying that he does. Likewise, he idolizes this person so much, he might even jump into bed and bend over for Ole Barry.
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.