Drunk? - Moi?

I got home from the pub last night and my wife said, "I can't believe how intoxicated you are."

Denying it I said, "I'm not drunk."

She said, "Yes you are."

I said, "No I'm not."

She said, "Can you tell the time?"

Spoiler:

I walked up to the clock and said, "I'm not drunk."