If The Joke Fits

My neighbour said to me today:
'Thank you for the show!'
And when he saw my puzzled look, he said:
'Last night! didn't you two go?'

'The whole street was watching as you performed.
It was better than TV!
You left the curtains open wide.
And everyone could see!'

'You certainly put on a show.
And no one was disappointed.
And as for those positions- well.
You two must be double jointed!'

But I told him: 'Go ahead and laugh.
But I am laughing too!
Because I wasn't even home last night.
So there! The joke's on you!'