Opium

I'll tell you a most serious fact,
That opium dries a mucous tract,
And constipates and causes thirst,
And stimulates the heart at first,
And then allows its strength to fall,
Relaxing the capillary wall.
The cerebrum is first affected,
On tetanus you mustn't bet,
Secretions gone except the sweat.
Lungs and sexuals don't forget.


Sir Arthur Conan Doyle