Four surgeons where on a long 120 jump trip and to pass the time they were talking about their preferred patients.

The first said he liked mathmaticians, as when you opened them up, everything was numbered.

The second stated that he desired to see librarians on his table as they invariably had everything carefully labelled and alphabetised.

The third surgeon announced he was never happier than when an electrician was placed under his knife as he knew that once he opened them up, he would find everything colour coded.

The final surgeon surprised them all when he said he always tried to operate on lawyers. He defended his choice by stating that lawyers are heartless, gutless, spineless and their heads and their arses were interchangible.