chintitis

Chintitis, a variation of hepatitis, refers to an inflammatory condition of a person's chin, resulting in an overly long or sharp chin.

Hey why the long face? Are you down with chintitis?

Chintitis

When someone has such a sharp chin, so sharp you have no choice but to shake their chin rather than hand as a greeting.

Oh hi friend, why is your chin so sharp? Do you have ChinTitis?