Someone who's to himself and very quiet but when you get to know him he's a really good, loving, funny person when you get to know him. He could also be mean but in a funny way. He's not afraid of anything, and loyal to those he's close with.
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.