This is what one says when a particularly gorgeous member of the opposite sex walks by (British urban slang). Should be used as a single phrase and said in a low, gutteral, sexually predatory growl.
"Phwoarrr! I wouldn'tkick her out of bed if she farted!"
this word is mainly used as a 'sound effect' in daily life, including but not limited to: martial arts demonstrations, extreme yo-yo, and most star wars reenactments. can also be used as a greeting.
Greg: "Hello there!"
Shelby K.: "PHWUAH PHWUAH!"
Greg: "...and then I went like this *handmotion* PHWUAH PHWUAH!"