Gregory mentions to Shanae that Adley Rutschman hit a walkoff home run for the Baltimore Orioles. This really happened the day after the episode aired against the Oakland Athletics to give the Orioles an 8-7 victory.
Near the start after Jacob does his magic card trick, one of the students runs towards the camera with his palms against his cheeks and mouth open in surprise. This appears to be a reference to a famous repeating animated gif showing a group of youths joking around, and a boy does a similar move towards the camera, and another kid seems to unexplicably disappear behind him.