Parents

I often send my students a recording of me playing what they need to practice.  I'd promised this 11-yr-old girl that I'd send her the new piece, but hadn't.  At the time of her lesson, there was the sound of a cello lesson 10m down the hall, and a violin practising on the other side of the wall (coming through loud and clear).

Me: I know I said I'd send you the recording, but you can hear how ... 'quiet' ... it is here, and there's construction happening next door at home, and my parents were staying... There was just ... no quiet time.
Girl [knowingly]: Oh... Parents... [then, in much the same way parents talk about their kids] They grow up so quickly, don't they???