“If Those Kids Could Read, They’d Be Very Upset” is a King Of The Hill quote attributed to Principal Moss from season 13, episode 14, titled “Born Again On The Fourth Of July.” In one scene, Bobby Hill holds a sign up to a classroom full of children that reads “Repent Sinners! You’re all going to HELL!” The teacher takes the sign down and tells Bobby “if those kids could read, they’d be very upset.”
In recent months, screenshots of the scene started being used as a way of mocking ignorant or closed-minded people with a controversial statement. According to knowyourmeme.com, If Those Kids Could Read Memes were first sighted in May 2020 to mock “covidiots,” or people protesting social distancing measures, lockdown orders, or wearing masks in public to stop the spread of the coronavirus.