When I worked at Heathrow (long ago) the ATIS was recorded by the Approach Supervisors Assistant from the Sup's desk. One of our ATCAs was totally deranged and one Christmas he gave the ATIS broadcasts his own version of the ICAO alphabet, which resulted in an Iberia flight saying "Heathrow Approach, Iberia 512 approaching Ockham with information Fandabidozi" Great fun and the pilots joined in too