Leadbelly,

From memory Rory Gallagher's version of the song went roughly as follows:

Well did you ever (x2)

Well did you ever wake up with them bullfrogs on your mind (x2)
You'll have to sit down laughing, laughing just to keep from crying.

Well did you ever wake up with that wild woman on your mind(x2)
You'll have to sit down laughing, laughing just to keep from crying

My Father got them, my mother got them,
My sister got them, my brother got them,
I woke up this morning, grandmother had them too,
Because you know 'bout now I've got them Bullfrog Blues.

Repeat verse 3

Called up the Doctor, was not feeling so well(x2)
Looked in side his bag, well, well,well

You don't need no Doctor, you Don't need no pills(x2)
Just take my advice, sure to cure your ills.

Get on Down to New Orleans, prettiest place you've ever seen,
Get on down to the river bend, thats where the music never ends,
Open your earts and don't it feel good,
Get one heavy shot of Rhythm & Blues.

(Instrumental break here)

Get on down to New Orleans, the greatest place you've ever seen,
Get on down to the river bend, and hear the music of a cajun band,
Honky tonk Piano will make you feel good,
open your ears to rhythm and blues

Repeat first verse.