The Rehab center had been successful at getting people off drugs and on to leading a "straight" life. As a result several clients had been discharged and there were a number of beds that needed to be filled to keep the operation profitable.
Two senior clients nearly ready to graduate were sent out to a couple groups of young people to try and recruit more business.
The first one came back with three new clients. The director was impressed and he asked the guy how he'd convinced three people to enter into recovery.
"It was easy", he said. "First I drew a large circle O, and said this is your brain. Next I drew a small circle o and told them this is your brain on drugs. These three signed up right away."
A while later, the other recruiter came back with six new candidates.
"Wow!" the director said. "How did you get twice as many people to enroll?"
"Well, I took a similar but slightly different approach to the other guy." First I drew a small circle o. Then I drew a large circle O. I pointed to the small circle and said this is your butt hole. Pointing to the large circle, I said this is your butt hole in prison."