Man of the House

We're all at Grandpa's home. Dad announces he's going out.

Dylan: OK! Now I'm the man of the house!
Me: No. Grandpa's still at home. And even if Grandpa went out, there's still Uncle Kee Min. So it's not quite your turn yet.
Dylan: But Mum says that whenever Dad's not in, I'm the man of the house.
Me: True, but this is Grandpa's house, so you have to wait your turn.
Dylan: ...