He does not have a special way of greeting people. He mainly says 'Hello.'
Winnie the Pooh was written by a British author A.A. Milne, born in London, and based the character Winnie the Pooh on a Canaidan bear named after the City of Winnipeg in Manitoba. So you could say Winnie the Pooh was British or Canadian.
Yes, Winnie the Pooh did say the word "piffle" in A.A. Milne's stories. It is used as an expression of dismissal or annoyance. The term reflects Pooh's charming and whimsical nature, adding to the character's endearing personality in the beloved children's books.
second book
I know he's a big star but I had no idea he even had an agent.
Deep in the hundred acre wood, Where Christopher Robin plays, You'll find the enchanted neighborhood, Of Christopher's childhood days. A donkey named Eeyore is his friend, And Kanga, and little Roo. There's Rabbit, and Piglet, and there's Owl, But most of all Winnie-the-Pooh. Winnie-the-Pooh, Winnie-the-Pooh, Tubby little cubby all stuffed with fluff. He's Winnie-the-Pooh. Winnie-the-Pooh. Willy, nilly, silly, old bear