My mom had me when she was 17. My dad was.... wait for it... 36. Gross. Why my grandma didn't press charges is beyond me.
And with regards to non-parents and baby-proofing. Good grief. I get it, I do. I don't expect them to have their houses kid-proof. But when they say shizz like "oh, it's okay! He'll be fine in the backyard" it's like, really?? The pool with no top? And the hungry-looking Doberman next door with no fence in between? And is that a cliff in the back, or just a pit that leads to the fiery center of the earth? Sure! You're right. Totally safe.