Don't laugh, This happened with one of my kids when he was 3. The area was about 6x8 ft. One of the wildest things that ever happened. Not going into details..........
The famous Derek & Clive: <object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/7NcRCYXuI3k"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/7NcRCYXuI3k" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>