"... and that's when Jonny used his pencil sharpener again! HA HA HA!"
Don't forget that most readers won't know what your boss did at the Christmas party, so make sure it appeals to a wider audience.
NO NAMES
This site is an anonymous collection, so to help things along, please refer to your colleagues in our house-style:
WORKER = the witness
CLIENT = if a client was present
COWORKER = the accused
READ IT AGAIN
Is it funny when written down? Your quote might have sounded hilarious in a Geordie accent, but does it cut the mustard on paper?