This is SO Simple!
Instead of making fun of someone else, like a customer, or some celebrity that nobody will ever stand next to in person, just make fun of yourself, people love this!
A few times when I'm doing my kitchen routine everything goes wrong, nothing works right, I look real stupid and inept, people love this!
A display that is a simple motorized item just quits totally, I grab it and throw it up the wall , "There! Wasn't that impressive ? "WEEE!" Scary stuff!"
I have played with the concept of always doing my routine in this constant failure mode. It could be alot easier, never having to ever fix anything after it breaks!

If you ever think that entertaining people isn't "Brain-Science" think again, it's nothing but........
Some will see your attempts to entertain them as a competition, it's you versus them and unless you have been doing this sort of thing for a very long time or are just extremely incredible at doing this, it very well may be be a uphill contest until they are subjugated to your will, but afterwards they may never want to feel this happening to their brains again. (or their physical bodies if you use whips?)
Wet-Noodle Whips are OSHA approved this season.
Mr. Tuxedo, my spookhouse cat and C.E.O. here is the only approved distributor for North America. He can't keep his paws off the "Tuna" when the noodles are packaged that way.