I was walking in the hallway with my new students when one of them asked my age...

Mrs. B:  Well, let's see, I'm 47.  No.  Wait.  I'm 48.  (pause)  No, 47...wait...umm...

(Two of the students exchange looks of concern.)

Natalia:  That's okay, Mrs. B.  It doesn't matter how old you are.  You're already losing your mind.