Oh, the number one is not my favorite number (why?)
'Cause one means only me and there's no you (aw, Ernie)
But one plus one you see
Makes two, that's you and me
And it's more fun when one and one make two

Oh, one and one make two
At least I'm pretty sure they do
Oh yes it's true
One and one make two

Now, say you want to play upon a seesaw
You're all alone and don't know what to do (well, what would I do, Ernie?)
Well, just go and find a friend
And he'll sit on the other end
You'll have more fun when one and one make two

Oh, one and one make two
At least I'm pretty sure they do
Oh yes it's true
One and one make two

Now, everyone needs somebody to share with
A pal to help and care for through and through
And there's no one that I've known
Who can do those things alone
It's a lot nicer when one and one make two

Oh, one and one make two
At least I'm pretty sure they do
Oh yes it's true
One and one make two

(Let's sing harmony!)
One and one make two
At least I'm pretty sure they do
Oh yes it's true
One and one make two
I said, it's true
One and one make two
They certainly do
One and one make two-oo-ooh!