Replying to
@JeroenBaten@mastodon.nl I'm not sure cheap insults count as clever, never mind 'sick burn'. Also, staring is very rude. Does a grown man not know that? Where I'm from, you can get stabbed for it.
So the 'joke' here is apparently: My elderly father has no filters or manners, and lamely tries to insult strangers who dare to call him out on his poor conduct -- which he then confirms with even worse conduct.
It's a good joke on its own, but the packaging -- "Unusual people deserve abuse." -- is terrible.