Whose Bed is it Anyway?!

We have been fighting the ages long battle of kids crawling into our bed in the middle of the night. It started about a week ago. When we first moved to this rental it was unbelievable how easily they went to bed for the first couple weeks. No TV, no fuss. They slept through the night. That has slowly changed. The other night I announced it was time to get ready for bed. Alexa put on her best pouty face and moaned pathetically, "Noooooo, not bed". I told her yes, it was time for bed. She pointed to my room and said "that bed", I responded with no, not that bed, your bed. She came back with "not my bed, your bed". I told her she was not sleeping in my bed, she had her own bed. She pointed to my room and said "My bed!" I, of course, laid claim and said no, my bed! That is when she got me... she looked up out of the top of her eyes, I swear she smirked.... and told me..... SHARE! You see, I have been saying that to her & Tristan alot lately when they get in a "mine" match. And no matter who the toy belongs to, they are supposed to share. I fell right into her trap about whose bed it was. It was very hard not to laugh as I took her pouty, mad, too damn smart, little body to her own bed. We don't win the battle every night. I am sure it will be easier when they are in their own rooms and not waking each other off & on all night. Then maybe they won't wake me off & on all night either!