Too much coffee will do that, not that it's ever stopped me from drinking it like it'll disappear tomorrow.

And besides, the British Empire was built on coffee and declined on Tea, stay away from the leaves, man. Stay away from the leaves...

--
"Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before. He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way."