In verse 4, "Sugar that" is Sugarhead. This was whiskey made by adding lots more sugar, to accelerate the fermentation process and speed up the time it took to run a batch. Conventional wisdom (this was long before hyperactivity was being linked to sugar in the soda pop &c) was that it made the user drunker, and also seriously intensified the hangover. The term is sometimes used rather generically for moonshine whiskey, good and bad, but in Prohibition days it referred to an inferior product that was sometimes "all ya could get."

Buster Carter and Preston Young recorded "What Sugar Head Licker Will Do" a couple of years after the Night Hawks were in the studio.