to feel uncomforyable when my neighbours four year swears and her Mother, just laughs

[SoleSource]

It's shit

He is a dickhead (about her DF)

I put on a fake smile but she xan tell I don't really approve.

Maybe I am a prude.

YANBU, and not a prude. But there's not much you can do with people who think it's fine for 4yos to use those words. :(

YANBU - I think it's vile. Always have. Children do pick up words so it can happen and it be no reflection on the parents really but your neighbour thinking it's funny reflects on her really quite badly.

It feels uncomforyable and I don't know where to look. It isn't funny.

Oh its awful. I've sadly heard it way way too much, makes me sad for the kids really

They're just words.

YANBU - It is grim