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2.
The imaginary sound a man he makes when he ejaculates
...and then it went phwee on my face!
by awesomoz November 06, 2009
 
1.
From the Card Captor Sakura English manga, "phwee" is the romanized version of the sound she makes ("Hoeeeeee..." {pronounced like ho-eeeee}). It's supposed to show surprise or confusion.
Tomoyo: Ah, spring! The time a man's fancy turns to love!
Sakura: Phwee?
by Yukita October 30, 2003
 
3.
A word used to show intense screeching anger or fear.
"Hey I just had sex with your girlfriend. Hope you don't mind."
"PHWEE!"
by EnigmaticCoffeeCup April 20, 2004