A man in a navy blue shirt is tossing a boy with a large smile on his face high into the air.
A man tossing his son into the air.
A man in a navy blue shirt is tossing a boy with a large smile on his face high into the air doesn't imply he is tossing his son.
The boy may not be his son, may be someone else.
A man can be playing with a boy who is not his son.