I propose a holiday on MARCH 15. In contrast to all the other holidays it is an anti-social day. Nothing evil just odd but legal behavior.
Things like taking off with somebody's cart at Costco and checking out. Its not stealing and I get to try new things. Then after pushing the cart for a mile, leave it in a parking space and say not a step further.
Or do not hold the door open for somebody or talk loudly on the phone about being on a plane with someone with Ebola.