overhand

If a character in a show
always wore a strap-on
prosthetic arm, but he
also had two (2) fully-
functioning arms, and
he blandly maintained
it was pure convenience
and benefit in his view, and
even made a point of doing
things with the arm, and
showing off how he could
manage some additional
trivial task addendum that
you couldn't, with your limited
two hands, and in subtle, cocksure
sneering ways treated the "less-handed"
as a "less-abled" class deserving special consideration,
condescension and a sad bit of pity, would that be....hm.
I can't think of the word. Believable? Promising? Anything?
Anyway. Would it be? 

Now, the real question, if so:
Must it be a comedy or dark comedy? Or could it be
drama? Police procedural potboiler, or legal team show. 
Could it be a documentary, or is it too late? You must understand

he only originally began using the arm and hand demonstratively 
to refute the naysayers belittling and razzing him for it. It was only 
over time, he began to
truly pity the
underhanded