Anybody familiar with these verses?

That walking cane - get up and get it yourself.
That walking cane - get up and get it yourself.
Cause if you ain't got the gumption to fetch it,
Better just leave it on that shelf.

That mandolin - you don't know how to tune it?
That mandolin - you got no riffs or chops.
Maybe you got it cheap on eBay, baby
Best take it to a pawnshop.