Doctor's Wife

A doctor and his wife were having a big argument at breakfast.
"You aren't so good in bed either!" he shouted and stormed off to work.
By mid-morning, he decided he'd better make amends and phoned home. After many rings, his wife picked up the phone.
"What took you so long to answer?"
"I was in bed."
"What were you doing in bed this late?"
"Getting a second opinion."