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"
NOT!!! "Thanks for the big screen tv... i'll give you a blow job"... (that is just prostitution)