A couple of years ago I went to a gathering with friends and one of the guys had organized this game. All of us got a paper slip about someone else there and had to yell “bingo” or something when the person on the slip did a specific thing. The one about me was that I say “lol”. The guy with that slip won almost immediately after I stepped in the door, when he told some silly joke.
I didn’t realize it then, but I just did now – I’ve lost the ability to laugh. I just say “lol” out loud. Even when I’m alone. It’s quite weird. If I think about it, I’m not even sure how long ago it was the last time I actually laughed like a normal person.