fweem

The sound made by an air-cooled Volkswagen engine in its stock configuration.

She took my bug and left me standing there, as the fweem trailed off in the distance.

Purple Fweem

An extremely sugary purple drink made by the character Kevin from the Crabgrass comic series. Unofficially known as lean for kids, the high-fructose drank is so potent that it causes any first-timer to scream "FWEEM!" at the top of their lungs.

Kevin: "Check it out. Seven kinds of soda, two cups of sugar, and a whole pack of Brainies™ candy!"
Miles: "It's so THICK!"
Kevin: "I call it Purple Fweem."
Miles: "That's a weird na- FWEEM!"