Perfume?

A young and beautiful woman gets into the elevator and smelling like expensive perfume turns to Bertha and says arrogantly, "Giorgio - Beverly Hills, $100 an ounce!"

The next young and beautiful woman gets on the elevator and also very arrogantly turns to Bertha and says, "Chanel No. 5, $150 an ounce!

About three floors later, Berthang Pinay has reached her destination and is about to get off the elevator. Before she leaves, looks both beautiful women in the eye, she bends over, and farts....."Kamote, 89 cents a pound."