Harvey, I've heard that that line "... drips Carnation from the can ..." is one of the things that give the song an authentic ring.

How many people have heard Enda Kenny's song about Earl Grey tea? The general principles are covered by lines like:

Is it perfume, or is it wee?
Whatever it is, it does nothing for me...

It is hot, it is wet,
It is eau de toilette,
Should I drink it or dab it on?
Can I swap it for a coffee or has all the water gone?

... and he's RIGHT.