Three guys were out in a boat fishing when one of the fellows hooked a mermaid. The mermaid pleaded for her freedom and promised to grant each of the fishermen a wish if they'd let her go.
"It's a deal," said the first fisherman. "Double my intelligence." Immediately, he began to recite Shakespeare's Macbeth and other classics of literature.
"Wow! That's cool," exclaimed the second fisherman. "I'd like my intelligence tripled." He'd no sooner made the request than he started spouting Einstein's equations on the theory of relativity.
"That's awesome!" shouted the third fisherman. "I'd like my intelligence quintupled."
"Are you sure?" asked the mermaid. "You may not like the outcome."
"Yes! I'm sure," replied the fisherman. "Please quintuple my intelligence."
He closed his eyes to wait for the wish to be granted and poof! - - he became a woman!