A life threatening disease that can be contracted through excessive existential questioning. Some symptoms may include depression, substance abuse, social withdrawal, identity crisis, and a shitload of other dysfunctions. Although deadly, this disease can be cured with a large dose of distraction, available in both physical and mental forms.

Please note that even after a person has recovered from Whatisitis, it will never leave the body of the carrier. It is, however, non-hereditary. You can also attempt to spare your children the uncertainty of life by introducing them to extra-curricular activities and/or by brainwashing them.