As I remember it the Steve Benbow version had the following - I've been singing it for years - along with a lot of other very silly songs (as my mate Baz says of me --'Head full of sh*te')

A Boys Best Friend is His Mother.

Peeping through the knothole of Grandpa's wooden leg
Who'll wind the cat up when I'm gone
Who cut the sleeves out of Grandma's woollen pants
And a boy's best friend is his mother.

Peeping through the knothole of Grandpa's wooden leg
Who'll put the clock out when I'm gone
Who cut the legs out of Grandma's woollen vest
And a boy's best friend is his mother

A horse stood around with his feet all on the ground
Why'd they build the shore so near the ocean
Go fetch the axe there's a flea on Lizzies ear
And a boys best friend is his mother

I fell from a window just forty stories high
Caught my eyebrows on the windowsill
The cellar's behind the door, Mary's room's behind the axe
And a boy's best friend is his mother

Dr.Sunshine (Dave Hunt)