There’s somebody on Twitter named Dave who makes animations that break your mind. I fell in love with a simple rotating one a couple of weeks ago and recreated it in Twoville:
Several others have recreated it too, but they appear to have fallen for the same trap that I initially fell for. They enumerated the colors of the rotating star in the same rotational ordering as the background. No minds are broken when the orderings are the same. Thankfully, my 9-year-old son saw the issue and advised me to reverse the ordering. Kids are great.