Sarah: How often do you eat fast food?
Amir: Sparingly.
Sarah: Really? That's great!
Jake: No, watch this, Amir, what does sparingly mean?
Amir: All day, every day, every hour, GOTTA HAVE CHICKEN NUGGETS IN MY POCKET NOW!!
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.