I was nodding you

At night someone knocks on the door. Woman wakes up and asks:
– Vasya, is that you?
Silence. She returns to bed. Again a knock.
– Vasya, don’t make me nervous, is that you?
Silence. She waits a while then returns to bed. Again a knock. She opens the
door to find her drunken husband Vasya standing there.
– You moron! I was asking if it was you, why weren�t answering???
– I was nodding you!!!