I don't bother saying anything about it because I don't think of it as special.
The dad said at one point that I was getting too old to get a cake on bdays. It wasn't much of a celebration to start with. So about 14 or 15? It became a "Oh, I have to say a different number now."
Nah, It's easy for me to remember. <:
But, at the same time, I don't think of how old I am until I read how young people are. I read 13-14 and just go: Wow. I'm twice your age. wtf.