The opportunity to go potty number two (defecate). This is an important thing for the many people who are constipated. These people will often shove the ground hog back in the hole because they can't go potty unless they are in a bathroom where they feel safe and comfortable. Usually such a bathroom exists only at home when others living with this person are at work or otherwise out. As a result, these people end up with very painful constipation.
Wife: "I have very bad gas and my tummy hurts! I haven't gone to the bathroom for five days".
Husband: : "Honey, did you have a crappertunity? You have to stop passing up crappertunities and go when you get a chance. Otherwise, you may explode!"