From the Anti-Barney Humor Wikipedia article:
The Barney Fun Page is an early website that allows users to attack a crude drawing of Barney with icons representing a knife, gun, and other weapons. Hosted originally on a University of Alberta computer system, the website was created in 1994. It is among the oldest websites in the world still operating as of 2025.
I was a teenager and had two younger siblings who were obsessed with it. I remember getting in trouble for hiding one of their VHS tapes.