I wanna be like that very annoying NPC in the Pokemon Bizzare fangame that just rambles on forever about such a meaningless story. But with my own nonsensical story that has negative a million plot relevance.

Otherwise, if we're talking like a single sentence of dialogue:

Hokus pocus, joker's ride, come take a spin on a carnie ride

Bonus points if it's in a medieval set game and deeply confuses the player character.