My gran taught me a different version.. It went something like:

I lololove to plalalay my yellellow banjellellow
My yellellow banjellellow, my yellellow banjellellow
My yellellow banjellellow, my yellellow banjellellow,
I lololove to plalalay my yellellow banjellellow
Til my yellellow banjellellow got brolololololololoke

I tooloolook it toolooloo the myulaloosic (translation = music!) shololop
The myulaloosic shololop, the myulaloosic shololop,
The myulaloosic shololop, the myulaloosic shololop,
I tooloolook it toolooloo the myulaloosic shololop,
The myulaloosic shololop was shulululululululut

And sololo and sololo and sololo and sololo
and sololo and sololo, and sololo and sololo,
And sololo and sololo and sololo and sololo
And sololo and so it stayed brolololololololoke!