[Verse 1]
Hello, I'm back again
Haven't seen you since I don't know when
It's been so long, but you seem so cold
Is it something you've been told?
She said "So this is what you think of me"
"Goin' some whore somewhere out in Germany"
I said baby
Baby, can't you see
It's nothing to do with you and me

[Pre-Chorus]
Nothing to do with my heart
Nothing to do with my head
Nothing to do with our home
Nothnig to do with our bed

[Chorus]
It's just B-I-O-L-O-G-Y
Can't you see
It's just biology
Biology, coming in between you and me

[Verse 2]
Your biology lesson starts here
And first of all we should make it clear
That the species known as males
Have these little white things with little white tails
Which
Multiply and start to shout
It's getting crowded down here, let us out
Once relieved, they start again
It's not a process controlled by the brain
[Pre-Chorus]
It's nothing to do with their hearts
Nothing to do with their heads
Nothing to do with their homes
Nothing to do with their beds

[Chorus]
It's just B-I-O-L-O-G-Y
Can't you see
It's just biology
Biology, coming in between you and me

[Verse 3]
She said "Thanks, I'm so relieved
What you're saying, I can well believe
Now I know, I feel no shame
About Dave and Tony and Phil and James"
I said
Baby baby, this can't be true!
She said "Well what's right for you
Has to be, right for me
In any case I'm sure you'll see"

[Pre-Chorus]
It's nothing to do with our hearts
Nothing to do with our heads
Nothing to do with our homes
Nothing to do with our beds
[Chorus]
It's just B-I-O-L-O-G-Y
Can't you see
It's just biology
Biology, coming in between you and me