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1.
The action of deleting your subscribed YouTube videos in which you have no interest, and only leaving the ones you actually want to watch.
The clean-out is a repeating action, which means you will find yourself deleting subscribed videos from the same subscription only by the subscribed account.
John keeps deleting Ted's videos from his subscription box, he does his YouTube Clean-Out regularly

Mike's subscription box was so full of videos, he had no choice but to do a full YouTube Clean-Out!
by ToDoomer August 02, 2011