"My mom and I" - anyone else finds this scene disturbing?

When I first saw the scene where Timmy "introduces" his mom by showing a photograph of himself sitting next to her tombstone, I thought it was really awkward and bizarre (and still think it is). OK, some kids lose their parents at an early age, but come on: didn't Timmy have at least one photograph of his mother when she was still alive? Was that single photo taken at a cemetery really all he had? Even if so, I found it really unusual for him to call a tombstone "his mom" - in "The Addams family" such a statement could be funny, in "Getting even with dad" it was really strange and disturbing.