On their first date, a man ask...

 On their first date, a man asked his companion if she'd like a drink with dinner. "Oh, no, what would I tell my Sunday school class?" she said.

Later, he offered her a cigarette. "Oh, no, what would I tell my Sunday school class?" she said again.
On the drive home, he saw a motel. Figuring he had nothing to lose, he asked if she wanted to stop in there.
"Okay," his date replied.
"What will you tell your Sunday school class?" he asked, shocked.
"The same thing I always tell them. 'You don't have to drink or smoke to have a good time.'"