Yes, the joke was borrowed from National Lampoon, and I’m old enough to remember both, but when Tom Waits says it, wow.
Fernwood Tonight was one of those weird late-night 70’s shows that bored teenagers like me would stay up and watch, along with SCTV.
It made stars out of Martin Mull and Fred Willard, and the material still holds up.
Here’s Tom Waits signing, The Piano has been Drinking.