Leaving during the middle of service

A pastor, known for his lengthy sermons, noticed a man get up and leave during the middle of his message. The man returned just before the conclusion of the service. Afterwards the pastor asked the man where he had gone.

I went to get a haircut,” was the reply.

“But,” said the pastor, “why didn’t you do that before the service?”

“Because,” the gentleman said, “I didn’t need one then.”