Seasick Steve: Thunderbird

Here's a song by Seasick Steve about one of his tipples of choice, Thunderbird.

It seems that this is a brand of 'low-end fortified wine', in other words the US equivalent of Buckfast.  It was once marketed as such, in a radio jingle:

 "What's the word? 

Thunderbird

How's it sold? 

Good and cold 

What's the jive? 

Bird's alive 

What's the price? 

Thirty twice."