In I Like Movies (2022) set in the early 2000s in Ontario, “Ashley MacIsaac” is paged to the office to take his ritalin — a Canadian easter egg, as MacIsaac was notorious at that time for his wild fiddling and controversial antics.

Fun Canadian in-joke heard on the high school intercom:

If Ashley MacIsaac could come to the office, it is time to take your Ritalin.

Explainer: Ashley MacIsaac is an acclaimed Canadian fiddler who's known for his raucous antics, and while he hasn't stated he has ADHD (which Ritalin is used to treat), he has exhibited erratic and highly creative behavior.

Tom Green even parodied him, peak Canadiana:

https://www.youtube.com/watch?v=u9yFX42NK1g