When you are extremely bored in class then you type "´+0987654321¨åpoiuytrewq'øælkjhgfdsa-.,mnbvcxz<" instead of actually learning some useful shit in school.
Jaden was once asked a question by his teacher but he had not heard a single word since he first stepped in the classroom, because he was thinking about some honey he met in the weekend. Jaden quickly answered this "´+0987654321¨åpoiuytrewq'øælkjhgfdsa-.,mnbvcxz<" random shit.... :)
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.