Flirting/ hooking up with someone (the 'dog') who is much worse looking than you (I.e. clapped ) Originating in Yorkshire, dancing with a dog should present no challenge at all, and the gratitude the dog will show should mean minimal effort is required to close. Sometimes played as a game among friends, seeing who can hookup with the most clapped person.
Jerry "these models are all so stuck up"
Terry "leave it man, just dance with a dog"
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Adam "is nobody in here attractive tonight?! anyone up for dance with a dog?"
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.