Oh, pish posh!

Pish posh: nonsense, something absurd.

Pish Posh: a children's novel by Ellen Potter. It tells the story of a young girl, Clara Frankofile, who is a pompous, snobbish 11-year-old who spends her evenings people-watching from a corner table in her parents' chic New York City restaurant, Pish Posh.