There's another story there...
My son's room had those self-adhesive stars when we moved in, but since at that point we needed a nursery and not a 9-year-old's room, we took them off (boy, was that a bitch, too).
What my wife didn't realize was that while she was taking them off, I was sneaking into our room and putting up a little constellation right over her side of the bed. 3 days later she finally noticed after we'd gone to bed:
"WHAT the HELL is THAT??"
"Eh?" (I had nearly forgotten about them at this point)
"There's something on the ceiling!" (puts her glasses on, shrieks, and starts hitting me) "You asshole! I wondered what you were up to!"
A few years later we moved the bedroom around so that the bed was against a different wall. I made sure to move the stars again when she wasn't looking. Pretty much had a repeat of the first time.
The stars are still there to this day. ;-)
