Used in conjunction with Motherfucker. A term for a nut who wanks. Frequently. Often used as derogatory. However, in extreme circumstances can be a compliment.
Noun. Person of questionable intelligence who appears to be crazy or unaware or both, usually existing in the outskirts of society; different in a way that indicates insanity. Used in civil conversation, the word can be either negative or positive depending on the context. It is similar to the word "weirdo."
That guy is a complete whacknut for attempting to jump a valley on a dirt bike without ever having ridden one before.
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.