Dr. Kelso: Is that Ted and a bunch of damn bikers?
Janitor: Why do you hate bikes so much, sir?
(Flashback with Kelso's childhood and his father)
Kelso's Father: Son, daddy has to move on. I just want you to know that since the car is in your mother's name, I wouldn't be able to leave the family forever if it wasn't for your bike.
(Present Day)
Dr. Kelso: It's complicated.