Chase after her and hold her legs apart
From Create Your Own Story
You let her run away for a bit, and then you tackle her to the ground, her ass sticking up in the air. By this time, you are desperately horny, so you spread her legs apart, making her butthole tighten up. You whisper in her ear, "I was going to spare you from the pain, but then you tried to run away from your daddy."
