Dropkick Murphys

Have you ever stopped to think about what rats do for run?
Sure they crawl around and scurry,
yeah they're always on the run but a rat sure likes a good time
just like you and me
I'll prove it with a tale about a rat-infested brewery
It started with a little lad named vermin McCann
who fell upon a drink that made him feel like quite a man
he rounded up his furry boys,
though some wore a frown
they quickly changed their tune and they slammed a couple down.
Chorus:
One, two, one-two-three-four!
Come on all you good rats