It Is Only A Small Error
The head monk says, "We have been copying from the copies for centuries, but you make a good point, my son." So he goes down into the dark caves underneath the monastery where the original manuscript is held as archives in a locked vault that hasn't been opened for hundreds of years.
Hours go by and nobody sees the old abbot. So, the young monk gets worried and goes downstairs to look for him. He sees him banging his head against the wall and wailing "We forgot the 'R', We forgot the
'R'". His forehead is all bloody and bruised and he is crying uncontrollably.
The young monk asks the old abbot, "What's wrong, father?"
With a choking voice, the old abbot replies, "The word is 'celebrate'."