If somebody said “oh, pish posh applesauce” 😌 to you .. would you take them as fighting words ?

Its someone that is expressing themselves its not necessarily good not necessarily bad something they disagree with or at least with my experience I don't use that phrase but have gfs that do here it all the time

nah
I'd have this smirky grin and whatever we had been righting about would be forgotten

by no means, pish posh applesauce.

I would ask Mary Poppins to put me in a chalk painting

Condescending..

Yes. Pistols at dawn.

No...that's how they get ya.