The kid at school who sat in front of you in class. Looks like they’ve slept in their school uniform, still got sleep in their eyes (eye bogies), hair sticking up like they haven’t brushed it in a while and also smells of biscuits, in particular McVities Digestives. Most popular times were the 1980’s.
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.