Crusty dusty dino can be used to describe a person who is not sharing and caring.
For example, Jamie McColgan was asked to getchocolate from downstairs by his loving sister as Jamie is very sneaky. Jamie said no! Therefore Jamie is a Crusty Dusty Dino.
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.