14. Diarrhea
Another foolproof method of faking sickness is diarrhea, as once again, there are no obvious symptoms, so noone can really say anything. In fact, you can probably avoid the doctor as well as it generally doesn’t last more than a day or two. However, you may be banned from junk food and those delicious desserts to ensure this doesn’t happen again, which will definitely dent your happiness for a while.
