A bizarre/cool thing happened Today (Boxing related)

So I'm at work, at a customers site. I'm doing my job, etc. and this guy says "yeah, I was going to say I bet you $50 the panel is not in there.....just like I bet $50 Stiverne beats Aereola again..." Mind you, I've never talked to this guy in my life, let alone five minutes or about anything other than a fire panel. We never talked about boxing or any sport, period. I'm not wearing anything boxing related, I did have a San Jose (Sharks) beanie on (it's raining, and it's the home team....still doesn't warrant boxing talk, let alone Stiverne-Aereola.) Then he says right away, you know what I'm talking about right?" So I was like yeah, boxing. Anywho we started talking boxing for five minutes or so and I ask him "what tipped you off to bring up boxing? (Stiverne-Aerola.) He said "he had a hunch that I liked boxing." He said he could tell. Pretty cool, thought Id share with you guys since outside of my girl y'all might be the only ones who give a ****. Weird though.