... So might this be a reasonable attempt to interpret this apparently somewhat random series of short stanzas into a coherent train of thought?:

"My life has taken a turn for the better since I made a new discovery as to how to spend the evening hours. Instead of going to the pub, which I can't manage as my credit has run out, I can get as much satisfaction staying in with just one good friend and a bottle to finish up between us. Although I am not rich, I can afford this, and find it makes me as content as if I really was a very wealthy man."

OTOH, maybe Dave was right, and it is only meant as a nonsense song, at that. Still, I think that makes for a reasonable interpretation???

~Michael~