I forgot how old I actually am.

This was wild. I was talking to my mother and she brought up my Sister-In-Law. She is married to my older brother.

She mentioned that she was 50. My brain did the, "Damn, 50?? She's old." After the call, I mentioned this to my wife, who is 51, and she gave me the ultimate wife you dummy look.

The realization bitch slapped me upside the head. (Im 49 btw).