Pretty dick move of him to do to a little kid.
Now is the perfect time to take your wife's phone and change your name on it to Santa Claus from the North Pole. Call the phone from yours and in a santa voice say you heard "Mr. Asshole" said he didn't exist. Tell your boy " Mr Asshole" that he's on Santa's naughty list and has been since he was 5 years old etc... By the time you know it your son will be telling Santa everything he wants for xmas and hopefully forget about what "Mr Asshole" said.
Then call "Mr Asshole" in a Santa voice and tell him to fuck off. Better yet post his number here and we will all call him in Santa voices
