When you can't come up with a joke that fits the pre-historical theme of your comic so you just shoehorn in a completely unrelated joke.
And more recently, “feminism”.
@SurgeonSean, oh snap!
They should've called it Tackleball.
Some football players also play sock-her. It’s called domestic abuse in Europe.
For anyone that was wandering the American football name actually comes from the length of the ball, measured in feet to be 1 foot, hence the name football!
Should say gridiron football
This joke doesnt work in england, where football is actually a game where you primarily use your feet to move the ball.
@Albatraous, it does because it specifically says "in the U.S.A."