Keeping up with the lingo!

Me: getting ready for the gym.
AJ: "who is staying with us?"
Me: "daddy"
AJ: "when is dad coming home?"
Me: "soon"
AJ: "yes!! I mean, No!"
Me: "why No?"
AJ: "I'd rather stay home alone, like, babysit....how old do you have to be to babysit?"
Me:"twelve"
AJ: "Oh Y word!"
Me: "um...what's the Y word?"
AJ: whispers in my ear "yackbrain with a shitty idea"
Me: "oh."