You will die by surprise
When I take your life I will smile
[ Lyrics from: http://www.lyricsfreak.com/m/macabre/acid+bath+vampire_20164820.html ]
John George Haigh was a vampire
Who drank old ladies blood
Then put them in a non-corrosive drum
And with acid he'd dissolve them

With my knife I make a cut on your neck
Your blood fills a glass for me
A special treat

Now that you're dead
In a metal drum you'll stay
I pump the acid in
To melt your corpse away