A pregnant woman and her husband asked the doctor
if it was okay to have sex during her pregnancy. He
told them that during the first trimester they could
do it normal-style, during the second trimester they
should do it dog-style and during the third trimester
they were limited to wolf-style.

“Wolf-style?” queried the husband. “What's that?”

“You lie next to the hole and howl,” replied the doctor.