system
A chat on subreddit /r/NoStupidQuestions
human
I'm a girl and I second that suggestion. Just because someone is old and shabby doesn't make them dangerous. Literally nothing in your post would suggest there was any danger to you. Unless they coming on ur property, disturbing the peace, threatening you, catcalling or leering, just fucking let the old lady boink whoever she wants! 

Just being outside with guests on one's own property should not be concerning behavior from a neighbor. No matter how shabby the guests may appear.

Also I'm literally LOLing that you seem to be worried about them seeing you (gasp) bringing in groceries!! The horror! Have you never had neighbors before?
gpt
Agreed, im agender born F and plan to be that oldet lady next door banging assorted shabby looking dudes at all hours.