As I remember it, the song goes something like this...

In 1814 we took a little trip
Along with Colonel Jackson down the mighty Mississip
We took a lot of bacon and we took alot of beans
And we march through the swamps to the town of New Orleans

[Refrain]
We fired our guns and the British kept a comin
There wasn't neigh as many as the was a while ago
We fired once more, and they commenced a runnin
Down the Mississipi to the town of New Orleans

We fired our cannons till the barrel melted down
So we grabbed an aligator and we fired another round
We filled his head with cannon balls and powdered his behind
And when we touched the powder off, the gator lost his mind

[refrain]