Tom Lehrer
"The Old Dope Peddler"

When the shades of night are falling,
Comes a fellow ev'ryone knows,
It's the old dope peddler,
Spreading joy wherever he goes.
Ev'ry evening you will find him,
Around our neighborhood.
It's the old dope peddler
Doing well by doing good.

He gives the kids free samples,
Because he knows full well
That today's young innocent faces
Will be tomorrow's clientele.
Here's a cure for all your troubles,
Here's an end to all distress.
It's the old dope peddler
With his powdered ha-happiness.