I will only apply a FYC on the next pitch. Did one last summer on a adult game. The batter, who played college ball locally, complained about an alledged outside pitch (it definately caught the corner). Said "That was horrible". I replied "You think that was horrible?". The catcher, who played at Long Beach State a few years before set up outside casually and had the next pitch thrown about 8" off the plate. Strike three!
The batter said "You gotta be kidding me!". The catcher said "That was a great pitch".
I did my best not to crack up! The catcher told me the next inning "I KNEW you wanted that pitch outside and at the waist blue".
Good catcher.
Oh, the batter didn't complain another call the rest of the day. Good for him!