I blame the ITV parody sitcom Chums for this! That, and a healthy little bit of Airplane!
Business was quiet in the Auror Department. It always was on a Friday, as though the villains were either in bed all day, or on strike over pay and conditions.
Sitting in his office, Head Auror Harry Potter was reading over his best friends' world domination plans, having a cup of tea and a scone when he heard chaos reigning in the main bullpen.
Frowning, he was about to go out and sort the problem out when Assistant Head Auror, Susan Bones, came rushing in brandishing a scrap of paper from a Muggle reporters' notepad he had given her with a list of sweets for a party that he was organising for the Minister's birthday.
"MAYDAY, MAYDAY"
Harry looked at Susan and smiled. "Mayday? Why that's the Russian New Year. You know, we'll have a big parade, we'll serve hot hors d'oeuvre..." Shaking his head, he straightened his face and looked at his deputy. "What's wrong?"
"I haven't got a Peeto. A Peeto. How can we have a party without a Peeto?" Susan said, panicking. "The party is going to be ruined because we haven't got a Peeto."
Harry got up from his desk and, looking at the list, laughed.
On the side of the list that Susan was referring to was:
'Chocolate Frogs
Bertie Botts Beans
Liquorice Wands
Ice Mice
Sugar Quills
Skiving Snackboxes
PTO'
"It's PTO, please turn over. not a Peeto." Harry giggled. "There is no such thing as a Peeto." 'If this is the intelligence level of my Assistant Head Auror has, Hermione has every chance of taking over the world.'
"Surely you can't be serious?" Susan asked her boss.
"I am serious, and don't call me Shirley."