I was in 5th grade, and we had been best friends since kindergarten. I'd probably spent the night at her house a hundred times over the years, and at other people's houses, but for some reason I was going through a homesickness phase the last time I stayed over. She had two of us over that night, and when I wanted to go home (really odd for me, but I just felt I HAD to get home), she informed me that if I went home it meant I was a baby and couldn't be her friend anymore. That made me angry enough to go home. We moved past it a couple years later but things were never quite the same.
How old were you when you quit sleeping with a teddy bear or other stuffed animal?