A noted psychiatrist was a guest at a National Organization for Women gathering, and his buxom blonde hostess naturally broached the subject in which the doctor was most at ease. ´
"Would you mind telling me, Doctor,"she asked, "how
you detect a mental deficiency in somebody who
appears completely normal?"
"Nothing is easier," he replied.
"You ask him a simple question which everyone should answer
with no trouble. If he hesitates, that puts you on the track."
"What sort of question?"
Asked the beautiful blonde hostess.
"Well, you might ask him, 'Captain Cook made three trips around the world and died during one of them. Which one?'
The young blonde woman thought a moment, then said with a nervous laugh,
"You wouldn't happen
to have another example, would you? I must confess I don't know much about history."

crap I had to read it twice before I got that one...does that make me have a partial deficiency? LOL