7yr old: (wipes public 3D glasses with tissue) Dad where do I put this tissue?

Me: (rolls eyes) In the cup holder in your seat. Or your pocket.

Me, to myself: When will this kid grow up?

Half an hour later, 9yr old: Dad can you take this tissue?

Me, to myself: Smack my head. This one is grown up.

I suppose I'll miss all this once they're actually grown up and responsible.