Once a priest says to his three sons, 'Today you can commit as many sins as you like, but you must come back and drink the holy water and be purified again!' So they all go off and commit their sins.
When they come back the father asks the 1st son what he did. The son replies, 'Father forgive me! I smoked, drank alcohol and took hard drugs.'
The father says, 'Never mind son just drink the holy water and you'll be pure again!' So the son takes a good swill of the holy water.
Next the second son recounts his events, 'Father forgive me for I committed much sins, I killed numerous people & animals and set buildings on fire, I robbed banks and stole cars!'
The father says, 'Never mind son, just drink the holy water and you'll be forgiven!' So he takes a good drink from the bowl and quenches his thirst.
The father looks at the 3rd son and asks, 'Son what sin did you commit?'
The third son replies, 'I pissed in the holy water!!!'