"polish pig" - is it offensive?

Piggy-in-the-middle.

which may not be an insult necessarily.

pig in a poke

I know it doesn't have to be bad but it can have negative connotations. Its a phrase that can be used as an insult towards the way that someone eats. It doesn't bother me personally but I wouldn't consider it a neutral term either.

I dont know, my friend is Polish and his nickname is prosiaczek=P

prosiaczek is cute, nothing wrong with it

you can say "ty świnio" (you pig!) to your friend when he is being messy or not very polite during a meal or something, so it is also a joke, but ONLY among friends. and a nickname "świnia" is not cute or nice or anything positive really...

My dad knew one Silesian guy whose nickname was Duschwein (German for 'you pig'), for he had a custom to pointing at someone and shout 'Du Schwein !' in the heat of discussions :)

Nazi Germans used to call Poles "polnische Schweine" (Polish swine) and I do not think calling Polish people pigs - especially in a WW2 context as mentioned in the initial posting - is a very good idea or especially sensitive.

Polish policemen especially like the affectionate pig name.....try it next time you want a free bed for the night and a punch in the face.....

If you already had an answer from Jewish pigs, why did you come here to ask?

It depends on the intonation too.