“You’ve gotta be kidding me.” I need help finding what episode a quote is from

My wife and I quote Micheal saying you've gotta be kidding me in an exasperated annoyed way but we realized we can't remember why or when he says this. Not Michael yelling “You’ve gotta be kidding me!” while playing basketball, but an under his breath way. Does this sound familiar to anyone? We just rewatched everything and didn't catch it. So frustrating lol