I'm Not Mad, I'm your sister

There's a tramp, he's amazing,
Got a razor that does his face in...
Spending many people at an aweful cost.
Take me home mummy, walk all over me.
I'm not mad, I'm your sister
There's a girl.
Her name is Nancy.
Romancing is her fancy.
For 60 seconds I've been sending my message to you...
NOT MAD...
There's a tramp...
What alot of pretty faces...
Take me home mummy, walk all over me.
Leave me alone, by the tombstone.
Not MAD, I'm your sister...
(Head all full of teeth).