I noticed a fake hypnotist show once.
When I walked into the building that advertised the show, it became out the “building” became just one facet of plywood painted to look like a constructing that fell down as quickly as I entered, and that i had unwittingly walked off a cliff.
Did not fall until I noticed i was strolling on air, though. It is my fault; I in all likelihood ought to have noticed the man shouting “step proper up and notice the hypnotist!” regarded uncannily like the large rabbit i was chasing, besides with a gigantic fake moustache.