Pretending to be rawdogging a flight but really you're just watching a movie on someone else's screen two rows ahead of you
"How was your flight? I saw that you were rawdogging it."
"Nah bro, I was totally snoopdogging it. The guy two rows ahead of me was watching Theory of Everything on his iPad."
"Bet."
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.