I copy&pasted here what Garry has put on his Watersons site, for there recently has been an unanswered request for these lyrics in this thread
Sung by Martin Carthy on Waterson:Carthy, Common Tongue.
Young Rackabello to the woods he has gone
Rackabello Rackabello riding all alone
Chorus Rye raddium rudy ida daddium
Di dye raddium rudy ida dandy [after each two lines]
Rackabello down the wood late yester e'en
Woman in the tall tree Rackabello seen
Woman oh why do you sit up so high
Nobody there be can come you a-nigh??
There's a wild boar living down in the wood
Cut short don't turn it drink your blood ???
Young Rackabello put his horn to his mouth
Blew it to the north and blew it to the south
Young Rackabello come to the wild boar's den
There he saw the bones of a thousand men
Wild boar struck, he began to run
Thrashing down the tall trees as he come along
Fought four hours on a long summer day
Wild boar struck and he would have run away
Young Rackabello drew the wee penknife
Rackabello Rackabello took away his life
Rackabello riding through his own front door
Up jumped the giant from the wild woods at all??
Up jumped the giant and Rackabello flew
You killed my little pig it's time for you
Into his box (?!) the giant then flew
Swore to his soul he would tear him in two
Rackabello Rackabello drew the sword again
Rackabello Rackabello split his head in twain