I have a 6 year old granddaughter, Mimi.  On her last day of kindergarten, after the
morning snack break, she was holding her little cup in her teeth with the edge of 
around her chin.  She was sucking on the cup without thinking.  When the teacher
gathered up the leftovers, she took the cup and realized that Mimi had given herself 
a HUGE hicky on her own chin--it was entirely purple!
Two days later, her 4-year-old brother figured out how to wedge the training
wheels on his bike in a way that would keep the rear tire off the ground and was
pedalling wih all his might..great fun.  Mimi was enchanted, was watching very closely,
started wondering what would happen if she stuck her finger in there....
After the got home from the emergency room (no break, sprained horribly) her
mom had to tell her she couldn't go roller skating on Thursday.