Slang for cigarette. When you are out of cigarettes and you need to bum one off of someone, call it a shmiggity and they will be more likely ot give you one.
"Hey can I get a shmiggity," said the drunk beach bum, pointing at his friend's pack of cigarettes.
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.