The article says he was with his grandchildren. Was there snow and ice at that time? I had a bad slip on ice and fell hard on a curb which may have broken a rib, My hand flew up and hit my cheek which hurt for a few days but did not bruise. On the other hand what did he hit to need stitches.
On the other hand what did he hit to need stitches?
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My best guess is a couple fists