One who wears a covid mask with their nostrils exposed. Thus only protecting half of what it's supposed to be covered to protect the wearer and those around the wearer.
Look at that fucking idiot half-masker. Why bother even wearing the thing if you're not going to do it right?
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.