You're gonna know right away if the specific style of humor of
John Mulaney & The Sack Lunch Bunch is going to be for you or not. This is a satire of classic children's variety specials hosted by John Mulaney and a large collection of children that's broken up into an assortment of comedic musical numbers, off-the-wall gags skewering hallmarks of children's television (like those "Can You Guess What The Image Is?" puzzles) and a couple of celebrity cameos. Much of the humor seems designed to leave some viewers more baffled than amused and that's totally fine. All art is subjective but that's especially true when it comes to comedy.
