Common word being used on reaction streamers that predict events in YouTube videos, catching viewers off guard.
It implies the streamer and social mediapersonality has watched the video before and is aware of any events happening in the video.
Steamer: "There's a banana split in that suitcase probably" 10 sec later, banana split in that suitcase.
Audience: "PREWATCHED, HOW DID HE KNOW"
Audience: "PREWATCHED LMAOO CAUGHT"
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.