Roger decided he was in no shape to drive as he walked out of the bar

So he sensibly left his car parked and walked home. As he was staggering along, he was stopped by a policeman.

‘What are you doing out here at three o’clock in the morning?’ asked the police officer.

‘I’m on my way to a lecture,’ answered Roger.

‘And who on earth, in their right mind, is going to give a lecture at this time of night?’ enquired the constable sarcastically.

‘My wife,’ slurred Roger grimly.