What does SOB mean?

Hi,

I hope somebody will help me. I'm not make sure, what does mean the "SOB" abbreviation? I suppose that it would be "son of a bitch". Is it truth? Have you any other ideas?

You are right, SOB stands for son of a bitch.

Sob???
dear Bob,
replace "b" with "t"
and it speaks of thee,
drinking plonk still?
not enough strong will?
Luke out! the Old Bill!
You mustn't kill,
that is beguile,
your time
with no rhyme