When a woman shaves your scrote while you are simultaneously being pegged in a seated position.
Donna gave me the Barber's Chair treatment last night. I am freshly shorn and won't shit right for a week.
She is as common as a barber's chair, in which a whole parish can sit to be be trimmed; said of a prostitute.
Time for me to go to the barber's chair it's been awhile, I might as well pay for it