Phoom Phoom is what you'll hear when your head is sandwiched between two large breasts as said breasts are shaken back and forth thus smacking your ears.
when a female is within a 6 feet radius of you and the vile stench of her genitals is crawling up the ducts of your nostrils. can also be used to describe a smelly anus.
john: “have you seen tricia today?”
joe: “no what about her?
john: “that bitch got a stanky poompoom!”