[House] Using the girls' room against them. :)

[Robin Lee Powell]

Since the girls seem to really like the idea of having their own
room, I think we should emphasize that one of the requirements of
getting their own room is that they sleep in it, all night, with no
adults.  That big girls with their own room should also be big girls
that sleep in their own room, etc.

Obviously I don't expect them to never come crawling into bed with
anybody (and, indeed, I would be pretty upset to never sleep with
them again as I rather enjoy it), but I think this is a good chance
to exert some pressure in that direction.