Phone call with mom on the occasion of my birthday...

mom: Wow, so, you're getting old!
me: I know! 26 years old!
mom: Wait, what? You aren't 26, are you? No!
me: Yes, mom, I am...I know, don't remind me!
mom: No, that can't be right...[counting to herself]...twenty-two, twenty-three, twenty... Oh my god, you're right. You are 26. That's so sad!
me: Mom.
mom: Oh, no, I mean, it's sad for me! Think about me!