Pffffffsh 

Sound it out...and then make a gesture with your right arm moving up really fast, while saying Pffffffsh. It means a bunch of negative feelings you say to someone you dislike, in one simple saying. Pffffffsh!

Laura asks Ben is he wants to go shoe shopping...Ben simply responds PFFFFFFSH! and walks away.

Pffffffsh by Stephen and Stephen February 7, 2005

pffffff

when you want to express your complete and utter disgust and pff just won't do.

him: I know you struggle to park
her: Pff
him: Because you're a woman
her: Pffffff!

pffffff by sosofa October 22, 2012

Pfffffft 

An expression of barely suppressed laughter at something enjoyed, or one of suspended belief.

" Pfffffft! Best. Ending. EVER." - Copypasta comment on story on AO3.

Pfffffft by Listener Sheogorath August 7, 2013