The undisputed king of fassys (see fassy).
Originates from the Russian Rasputin, advisor to Tsar Nicholas, not necessarily a fassy himself but his name was too appropriate.
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.