Puff the magic dragon
Smoked two packs a day
His teeth looked like a yellow cab
His lungs were awful grey
Now Puff and his old lady
Decided to cut back
And only have one after sex
And share one from the pack
But Puff became so lonely
When his wife began to play
Now he smokes only once a week
And she - three packs a day!
(I always wanted to use that smiley - I finally got a chance...)