Missalitis

1. when your teacher suffers from incompetency.
(derived from the ancient drummer once kicked out of Billy Idol's band only to become a horrible, horrible teacher.)

Kid1: Man my teacher sucks!

Kid2: She must be suffering from Missalitis!

missal

Any book of prayer or devotions.

The missal contains holy prayers for the entire year.

rory missal

A person that is short and athletic.

Man, he's a Rory Missal!!

Missal monger

1. A Catholic priest. 2. A zealous Catholic worshipper. From missal (the Catholic book containing the text of prayers, chants, responses and the like used in the Mass) + monger (dealer or broker).

Father Mike is quite the missal monger, he really had folks fired up with that service on Sunday.