1) any guy who thinks he's tight and is a chump 2) A guy who wants to kick your ass when losing an argument 3) a guy who acts tough with friends around, and a pussy when by himself
Dude, look at that feelstrong over there, he thinks he's tight with that tight black shirt.
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.