Butting heads happens when a pregnant female and a male with an extremely large
cock are engaging in sexual intercourse. As the male begins to vigorously thrust his large
cock into the pregnant females vagina, and gets deeper and deeper, eventually the
head of his dick will begin butting against the head of the unborn fetus, which is commonly known as butting heads.
Jameson:
Hey Gary, I heard you were banging that pregnant
hooker last night.
Gary: Yeah, I did. And I’m pretty sure that baby and I were butting heads most of the
time. I probably gave it a concussion.