After they helped each other finish a single prayer (filling in forgotten names, adding important blessings), Roo leaned over to kiss Em goodnight.
"See you in the morg-ing." she said.
Then, she climbed into Em's bed and pulled the covers up over them both.
Roo explained, "We in a bunk bed."
A brief reminder of what a bunk bed looked like did nothing to deter her insistence. They were in a bunk bed. End of story.
To give them enough room, I pushed their beds together.
Thinking over it, after closing the door, I remembered the book Roo's been pouring over of late.
In it is a tale of a baby bunny and what his family imagines he will be when he is grown. The final illustration shows the baby, all grown up, as a father rabbit.
He is lifting a bunny high into a four-tiered bunk bed. Below, sleep the baby's siblings.
Two to a bed.

Of course. Bunk beds.