This here article is in no way, shape, or form to say that there is anything wrong with big girls or dudes who choose to screw them. Now that we got that out of the way, if you did stick it to a chick over 176 pounds and "forgot" to use protection, you may be the one who is actually getting fu**ed!! 

According to Mother Jones:

Some of the most popular emergency contraceptive pills sold over-the-counter in the United States—including the one-pill drugs Plan B One-Step, Next Choice One Dose, and My Way, and a number of generic two-pill emergency contraceptives—have a dosage and chemical makeup identical to the European drug. Weight data from the Centers for Disease Control suggests that at 166 pounds, the average American woman is too heavy to use these pills effectively.

 

The article goes on to say that doctors are not sure that there is a viable option to increase the dosage for the larger version of females. But I do want to let you know that there is nothing wrong with doing a big chick... They say they are just like the town tricycle. Fun to ride until your friends catch you on them... And the fastest way to get caught is by knocking her up. So, if you would like to have some fun without the baby... USE A DAMN CONDOM!!!