https://www.cnet.com/news/teachers-viral-avengers-endgame-plea-to-students-dont-spoil-it-for-me/

"My little brother is on Tampa on a business trip. I am waiting until he gets back to see Avengers: Endgame. That will be Wednesday at the SOONEST," the tweet reads. "DO NOT discuss ANYTHING about it anywhere near my classroom UNTIL THIS SIGN COMES DOWN. You know how much I love Marvel comics."

The much-anticipated MCU clincher, which opened worldwide Wednesday, has pulled off the biggest global opening in movie history, hauling down an estimated $644 million so far, according to Disney.