have or affect the type of speech that is used the upper class
So a posh restaurant, hotel, car etc is expensive and looks as if it’s used or owned by rich people; while to “talk posh” is to talk in an upper class manner. Google
"They make fun of me because of the way I talk. They say I 'talkposh'.". Then she did start to cry. google
We don't talkposh that's only the Royal family (we don't talk to them anyway). google