Dr. David Zimmerman is the psychologist that Cleveland and the guys go to see to get to the bottom of why their relationship has gotten too predictable in "Pins, Spins and Fins!". As the doctor correctly identifies that their friendship mostly consists of hanging out at The Broken Stool and had even written a book on the subject, Beer Me, Sit Near Me, Why Can't You Hear Me?, he predicts that their friendship is past its viable time of three years and is over.
After the session, he offers a payment option of accepting a check or hypnotizing them with the full disclosure that things will get weird.