"GravyDay", "Paul Kelly" and "the 21st of December" were trending terms on Twitter, with many posts playing off How To Make Gravy's narrative.
Joe, the song's made-up protagonist, sings about his family's traditions, such as relatives "driving down from Queensland" and "flying in from the coast".
The song has even been likened to "an Australian Christmas carol". Instead of northern-hemisphere references to cold things, Joe anticipates a hot Christmas Day.
"They say it's gonna be a hundred degrees, even more maybe," the lyrics read, "but that won't stop the roast".
His emotional messages to family - such as "give my love to Angus and Frank and Dolly" - have become a particular focus of fun.
And just what is the best gravy recipe? According to the lyrics, it is: "Just add flour, salt, a little red wine, and don't forget a dollop of tomato sauce, for sweetness and that extra tang."
Some said they would follow that advice, but others questioned the recipe.
Those due to travel have been told to check the status of their flight, while Easyjet told its passengers not to go to Gatwick if their flights have been cancelled.
European air traffic management group Eurocontrol said the runway would remain closed until 11:00 .
Image copyrightPAImage captionFlights were diverted to other airports, including Paris and Amsterdam, following the runway closure
The shutdown started just after 21:00 on Wednesday when two drones were spotted being flown over the airfield.
The runway was briefly reopened at about 03:01, the airport said, but forced to close again about 45 minutes later amid "a further sighting of drones".
About 10,000 passengers were affected overnight on Wednesday, with some flights landing in Paris and Amsterdam.
Mr Woodroofe told the BBC two drones had been seen flying "over the perimeter fence and into where the runway operates from", sparking "very significant disruption".
He added: "The police are looking for the operator and that is the way to disable the drone."
It is illegal to fly a drone within 1km of an airport or airfield boundary.
Image copyrightEDDIE MITCHELLImage captionPassengers say many people have been forced to sleep on the floor overnight at the airport
Planes were diverted to other airports including London Heathrow, Luton and Manchester.
Aviation website airlive.net said some services were re-routed as far away as Cardiff, Paris and Amsterdam.
Crowds of passengers waited inside Gatwick's terminal for updates, while others reported being stuck on waiting planes for several hours.
An airport spokesman said "Extra staff have been drafted in and food and water is being provided where possible."
Kasia Jaworska told the BBC she had been travelling from Glasgow to Gatwick with her boyfriend when her flight was diverted to Luton.
Media captionPassengers affected by disruption at Gatwick Airport spoke of their frustration
After spending about two hours on the plane, she said the couple were put on a bus to Gatwick, from where they had been due to fly to Istanbul.
Ms Jaworska said she thought it was "strange" that two drones had led to the closure of the airport.
"You would imagine there would be better security in place and emergency action for something like that," she added.
Flight from Kiev to #Gatwick was due to land last night at 21.45. We landed in Birmingham airport. Now almost 4am, still on the plane, no food or updates from our crew. Not allowed to disembark. Bodies sleeping on every seat and across the floors. #GatwickAirport
Andri Kyprianou, from Cyprus, who had been visiting London, said: "There were pregnant women, one of them was sleeping on the floor.
There were people with small babies in here overnight, we saw disabled people on chairs. There were young children sleeping on the floor."
An airport said apologised for any inconvenience and said airlines were "working to provide affected passengers with hotel accommodation" or provide alternative travel options.
Drones and airports
The law says:
It is illegal to fly a drone within 1km of an airport or airfield boundary
Flying above 400ft (120m) - which increases the risk of a collision with a manned aircraft - is also illegal
Endangering the safety of an aircraft is a criminal offence which can carry a prison sentence of five years
Safety and security is our number one priority, so we have been forced to divert all incoming flights and delay outbound flights until the airport resumes full operation.
Tui said all its flights were being disrupted, saying it would be contacting all customers directly with further updates and posting information on its website.
