Imagine you imagining that you love me
And starting on a family tree
Imagine starting on a family tree
The mama is you and the papa is me

If your heart goes bumpety-bump
It's love, love, love!
If your throat comes up with a lump
It's love, love, love!
If your knees go knockety-knock
It's love, love, love!
If you're cuckoo like the cuckoo in the clock
It's love, love, love!

Imagine you imagining a cozy flat
Complete with running dog and cat
Imagine having running dog and cat
And we will have welcome all over the mat

If your heart goes bumpety-bump
It's love, love, love!
If your throat comes up with a lump
It's love, love, love!
If your knees go knockety-knock
It's love, love, love!
If you're cuckoo like the cuckoo in the clock
It's love, love, love!

Imagine you imagining a man and wife
We'll go and buy a fork and a knife
Imagine eating with a fork and a knife
How ritzy we'll be for the rest of our life

If your heart goes bumpety-bump
It's love, love, love!
If your throat comes up with a lump
It's love, love, love!
If your knees go knockety-knock
It's love, love, love!
If you're cuckoo like the cuckoo in the clock
It's love, love, love!

___________________________________________

What?
"If your knees go knockety-knock
If you're cuckoo like the cuckoo in the clock"
?

It's gotta be the great Guy Lombardo and his orchestra back in 1944 playing "It's Love, Love, Love"

Regrettably, they don't write lyrics like that anymore... thankfully.