Mensa o menso

A Mensan, a Triple Niner, and a Promethean walk into a bar, The Mensan says to the bartender, “A beer worthy of the top two percent, please!"
The Triple Niner says, “A beer worthy of the top zero point one percent please"
The Promethean says, “A beer worthy of the top zero point zero zero three percent please"
The bartender shrugs. “I'm in the Mega Society. Due to the enormous sigma disparity, I can not efficiently communicate with carrots"...