"Now aw've smoked mi backy"

Search-terms people are using to find what turns out to be the most popular page on my site:

who wrote song when the boat comes in 43.19%
lyrics when the boat comes in 42.01%
dance ti thy daddy 9.92%
when the boat comes in words 4.06%
lyrics dance to your daddy my bonnie laddie 0.81%
lyrics for thou shall have a fishy 0.01%
song dance for your daddy my bonny laddie 0.01%
t 0.00%
cucanandy-nandy lyrics 0.00%
you shall have a fishy on a little dishy when the boat comes in 0.00%

"Cucanandy-nandy lyrics?" Du-u-ude. What exactly is IN that pipe?