Isla, the Smartass...

So I was changing Isla's diaper the other night up in her room and here is the conversation that followed:
Isla: I'm sorry I pooped mommy.
Me: Don't be sorry you pooped honey. Everybody poops. Mommy just wants you to poop in the potty.
Isla: Oh. I will some day mommy.
Me: Really? When?? When you're 35?
Isla: No. When I'm 31.

I have the distinct feeling that I have met my match...