a shopper at a supermarket/ store that checks out at the expressline when they clearly have more items than the maximum. this makes everyone behind them wait.
"Look at this expresshole! he has 20 items when you can only have 5 on this line!"
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.