When you are giving a woman anal sex from the missionary position, then punch her in the stomach hard enough to make her throw up all over her tits. Then you pull out and ejaculate all over the throw up to make a nice creamy oatmeal. Spoons not included.
After this you top the creamy goodness with her crap that's still on your penis for the surprise.
We had the greatest Tallahasse oatmeal surprise tonight since she had to crap and the topping was extra thick