M6 Customer Treatment

The art of receiving oral (a blowjob) by another individual, where most of the time the other individual is of the same gender as the receiver.

Person 1: Hey bro, are you at Shannon right now?
Person 2: Nah, man. I'm trying to sell this car and the guy told me he would buy it if I gave him the M6 Customer Treatment.
Person 1: Oh, word? Alright, cool. Do your thing and good luck on the sale.