I’m On Duty Frank Zappa

FZ: 'An I just look back at 'em and I say, "I AM ON DUTY."

On duty
On duty
On duty
I'm on duty
I'm on duty
I'm on duty
I'm duty, duty, duty, duty, oh, duty!
(Good God!)
Duty!
Duty!
(Duty!
Duty!)
I'm on duty!
(Duty!)
I'm on Duty!
(Duty!)
Duty, duty, duty, etc

FZ: And whenever I say that to 'em when I'm going through customs, they always look back at me and they say, "Come on, Frank, tell us the truth. What are you really ON? I mean, you can't possibly expect us, with our uniforms and our submachine guns, to think that you're just, I mean, what are you ON?" An' I just say, "I'm on duty!"

I'm on duty!
I'm on duty!
I'm on duty!