Pfft American interjection exclamation
Used to denote a sound that indicates the sudden disappearance or ending of something.
All of a sudden - pfft. He's gone without telling us.
Well, pfft, they disappeared!
Used to reject or disagree in a sarcastic way with what someone has said or done.
Pfft, what a ridiculous idea!
"He said he would win the first prize" - "Pfft, he might be daydreaming".
It is first recorded in 1920–25
Friendships will develop well and be successful when the friends respect each other's privacy.
You should respect your friend's privacy. A hedge between keeps friendship green.