Falling out of bed

Big THUMP in the night...
Liem crying...
Liem found on the floor with his bed fence quite far out from the bed. On questioning, Liem said, "I was fweeping between the bed and the fence". Somehow he must have worked the fence further and further from the bed until the gap was big enough for him to fall through. Only Mr Liem would be talented enough to fall off the bed even with a fence on...