The act of smashing a 5'5" blonde haired dancer with crooked teeth at a frat party while holding a bud light and wearing an Arthur Morganhat yelling John Marston quotes. The girl is typically an ex that wants you back but you've already gained thirty pounds of muscle that you don't even vocally answer her, your above average 6" cock does the talking.
"Bro! I saw you with your ex earlier, what happened!?" The frat bro asked. The guy replied. "Nah bro, I just wore my Arthur Morganhat and gave her the Dirty Looch while she experienced all my new gains and beer stains on her back."
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.