An asseurysm is the medical term for when multiple farts are blocked behind a brewing turd, causing the pressure in your ass to rise and a feeling of discomfort in your ass. Failure to release the turd and lower your ass pressure may result in Coronary Ass Disease (CAD).
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.