lollapalooza

1. (informal) An outstanding, extreme, or outrageous example of its kind.Examples: "When the show-down came, the other players informed him he had lost. One man had turned up a 2-4-6-8-9 of varied suits. ¶ "That," they all exclaimed, "is a Lollapalooza. It beats anything—even a Royal Flush.""; "Here is a novel of low comedy and high raillery. It's a lollapalooza that turns out to be a comic elegy for old-time radio."; "Far from the grand events that were once considered – speaking to Parliament or a more modest version of the lollapalooza that brought millions into Chicago streets – this six-hour hi-how-are-you redefines low key."informal