Pro vaccine guy tried to fight me

Put a bunch of stuff on the till and came within 1m of guy. He yelled at me to back up. Thought he was joking so I laughed and said no. He then blew a gasket started shaking and red in the face, I asked him if he was being serious. He said "quit infringing on my rights to 2m buffer". I laughed at him and said what you gonna do and he shut up and left. His gf was with him and will probobly never want to bang him again for making an embarrassing scene. She hid her face in her shopping cart the whole time lol