A word that no one would ever use to refer to a blowjob, and if people do they will most likely not receive one. But society today has to have a "proper word for everything because something like "blow job" is too vulgar.
The forgetten art of offering felatio as a nice 'thank you.' It is important to note that the felatio should NOT be used as an exchange for money or goods. Courtesy felatio is proper in lieu of a Thank You Card.
Perfect in return for helping someone move, house sitting, picking up groceries, drive to the airport, helping jump start your car, etc...
"Thanks for the drive to the airport. Allow me to express my gratitude with courtesy felatio"