One Flew Over The Cuckoo's Nest III

In part three of the novel the doctor approves a fishing trip for the acutes.  Bromden and McMurphy were two of the few picked to go on the trip.  They all pile up in a van and head to the lake where they will fish.  On this trip McMurphy acts out of course.  While stopping to get gas a man makes a comment that sets McMurphy off, so he begins to tell him how there from the ward. But it only gets worse when he starts to tell him that there really crazy people and makes up stories of all the things the Chief did to get in the ward.  Im sure the doctor and the nurse would have regretted sending McMurphy on the trip.