Seriously, ALL of us with kids understand this....
especially if we KNOW it was in our family before us or THINK it was....
my son, 11, told me that his hand went to sleep one day last week, when he was asleep home sick from school. Now you KNOW what went through my head. But out of my mouth, some wiser woman than me said, "Honey, you are probably pinching something in your shoulder, lay on your back a while and see if it gets better!" Thankfully it did....
But we have our whole lives to worry about them, don't we ?