Y'all have no idea how fucking stupid some of the people that I have to deal with when it comes to the coronavirus and the pandemic. It's amazing they even function in normal society or can make themselves a PB&J sandwich.
A better way I like to use is: "Even if I'm the average person, half of all others are dumber than me". I may be above or below average, but I feel it gets the point across better because you have a reference point.