Today, at the office, I was walking towards a blind man who works in another department. When I realized our paths would collide, I called out that I was on his right because we'd received an email from HR that said this would help him. I was actually on his left. FML
OP here! Luckily the guy has a great sense of humor and just laughed it off saying "It's really early in the morning, I get it." He didn't seem upset at all.