Matt always wants to knock up my asshole trying to make me pregnant because he says it would be fun to have a little skippy-boy running around, but I told him it doesn't work that way!
To implant semen in the womb for the purpose of uniting with an egg to form a fetus, therefore stopping menstruation and causing the body to expand as the fetus grows.
The purpose of Tyrone forcing sex on Brie Ann, the prom queen, was to knock up the queen and also to knock her off the throne and change her attitude. Brie Ann had been rubbing him the wrong way for months. Now she could think about this for years.