I can't come away from a Christopher Guest film without feeling sort of happy about being alive just because the movies make you laugh in such a self-referential way. The house that you grew up in had, before you moved to Mexico, had a detached garage with a second story that became your laboratory of sorts. You collected safety cones and roller blinds and wind chimes and use them to make what you've referred to as Rube Goldberg-like installations,. Halloween haunted houses, elaborate lemonade stands.