Also known as The You're Not Funny Paradox wnd Shut The Hell Up Paradox.
When a person tells a joke and no one laughs than the person feels awkward in the silence, they also feel the need to fill the silence with another joke but they are not funny so no one laughs again.
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.