Protard is a combination of the words "professional" and "retard", and is generally used someone who is consistently stupid in their actions.

the thing that you don’t have when you’re phones percentage is over 20

A professional retard; the next level of retardation.

A term used aboard merchant vessels when setting ship's chronometer forward after crossing time zones.

Countable common noun: Protard(s): (pro-tard)- A name given to supporters of retards or special-education people

One who acts as both a professional and retard, thus is professionally retarded.