a popular meme in the movie Diary of a Wimpy Kid: The Long Haul where the main character Greg accidentally picks up a diaper and it gets stuck on his hand, and he keeps shouting "It's a Diaper!" while a lot of people were recording a video of him, eventually he went uncontrollably viral.
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.