Giving a lecture

After 5 hours sitting in the bar, a man was in no shape to drive, wisely left his car parked and walked home. As he was walking unsteadily along, he was stopped by a policeman.
"What are you doing out here at 2 am?", said the officer.
"I'm going to a lecture.", the man said.
And who is going to give a lecture at this hour?", the cop asked.
"My wife!!!" said the man.