My bad behaviour, my bad behaviour, 
Told you I was trouble with my bad behaviour, 
My bad behaviour, my bad behaviour, 
Told you I was trouble with my, 

Now tell me if I'm bad, (Oh-oh-eh-oh) 
Please don't tell all your excuses, (Oh-oh-eh-oh) 
So don't get serious, (Oh-oh-eh-oh) 
He couldn't be persuaded, (Oh-oh-eh-oh-oh-oh-oh-oh-oh-eh-oh) 

The key to your heart, (To your heart) 
And you would know from the start, (From the start) 
And if a [bad word] it won't be the last, (Be the last) 
I've got a little problem that I can't seem to solve, 

My bad behaviour, 
My bad behaviour, 
Told you I was trouble with my bad behaviour, 
My bad behaviour, 
My bad behaviour, 
Told you I was trouble with my bad behaviour, 

Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, 

So how's it a surprise? (Oh-oh-eh-oh) 
When you knew who you were dating, (Oh-oh-eh-oh) 
Just out to have some fun, (Oh-oh-eh-oh) 
So we shouldn't [bad word]  (Oh-oh-eh-oh-oh-oh-oh-oh-oh-eh-oh) 

The key to your heart, (To your heart) 
And you would know from the start, (From the start) 
And if a [bad word] it won't be the last, (Be the last) 
I've got a little problem that I can't seem to solve, 

My bad behaviour, 
My bad behaviour, 
Told you I was trouble with my bad behaviour, 
My bad behaviour, 
My bad behaviour, 
Told you I was trouble with my bad behaviour, 

Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, 

So tell me, t-tell me, tell me, why, why should I stop? 
If we're having fun we'll do it till we drop, 
So tell me, t-tell me, tell me, why, why should I go? 
If we never know, 

My bad behaviour, 
My bad behaviour, 
Told you I was trouble with my bad behaviour, 
My bad behaviour, 
My bad behaviour, 
Told you I was trouble with my bad behaviour, 

Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (Bad behaviour) 
Oh-oh-oh-oh-eh-oh, (B-b-bad behaviour