[TangoLimaSierra]

...when he realizes that his neighbor or the stranger passing him in the street may be armed and could shoot him at any moment.

Wait till she finds out most men have penises and might rape her at any moment. Well, not her.

[TonyM]

How about knowing your neighbor has what it takes to come to your assistance if being robbed or worse in a home invasion.

[lostboy61]

Please! Things that have been seen can not be unseen. Things that make you throw up in your mouth a little.