In a trial, the defense lawyer was cross-examining a pathologist.

LAWYER: before u signed the death certificate, had u taken the pulse?
PATHOLOGIST: no.
LAWYER: Did u listen to the heart?
PATHOLOGIST: No.
LAWYER: Did u check for breathing?
LAWYER: so, when u signed the death certificate u weren’t sure the man was dead?
PATHOLOGIST: Well, let me put it this way. The man’s brain was sitting in a jar on my desk. But I guess it’s possible he could be out there practising law somewhere.:-D