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eroock
Since: Sep, 2012

It's the thing where at the beginning of the episode a character will enter the scene or something like that and all the other characters will have absurd things going on, such as one of them having a fully shaved head, one of them dressed in a ridiculous costume, etc and then they start telling the story, and the whole episode is set up of multiple flashbacks from earlier in that day where you slowly learn how each of the absurd things happened.
I feel like this usually happens in sitcoms like on Disney channel or nick.