Acting in a borderline inappropriate manner, dare even say raunchy, in a public scene due to a personal accomplishment (or at least an accomplishment that one could experience vicariously) or endeavor in which the outcome was so congenial that it set in motion a series of outbursts of violent and pseudo sensual verbal/body language.
After Texas Tech beat Texas aTm in the big XII basketball tournament, thanks in part to Mike Singletary's 29 consecutive 2nd half points, I caused a raucus throughout College Station.
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.