A/N Okay, this was going to be a one-shot, but... meh I love writing too much! Please review!

Warning: I upped it to a T because there might be some swearing in the next one and there're a few implications and innuendos so I wanted to be sure!

Minerva,

I hope this letter finds you in good health, It's been so long since we met!

The children are all fine; Charlie's visiting from Romania so we're having a bit of a family reunion. Ginny won't be there as her Auror finals just began, Arthur and I are so proud! It's this Sunday at Noon. We'd love you to come?

Bring Harry and Severus as well, they never seem to eat enough and keep avoiding my Sunday lunches, heavens knows why!

Hope to be seeing you soon,

Molly

Headmistress McGonagall read the letter with a sigh. Mrs Weasley was correct, it had been too long. She'd rearrange her schedule and make sure she took the Floo over before one. If she bought a bottle of Firewhiskey it could be quite an enjoyable day.

Harry and Severus on the other hand... would be troublesome. And she couldn't blame them. After their initial reception at the Burrow, she wouldn't be too keen on going either. The Stupefy that had flown straight at Severus was highly uncalled for.

Hmmm maybe blackmail of some sort? She thought, a smirk threatening to break free, I must have something I can hold over the both of them! Ah, maybe that time I caught them in the staffroom against the-

Suddenly, her thoughts were interrupted as the wards alerted her to somebody travelling up the spiral staircase.

With a violent crash, a strange woman burst into her office, dragging a struggling Harry Potter. And, as unnerving as the sight was, that was not what shocked the stern Headmistress. No, what truly surprised her was the uncanny resemblance she bore to Lily Evans.

And, in a rush, McGonagall knew exactly what had happened.

When she first heard the explosion, she – like everyone else in the castle – had assumed some poor mite had had a potions accident.

But now, she realised she was looking at just the next step in Severus and Harry's infamous 'prank war'. Oh she was going to have fun with this!

O0O0O0O0O0O0O

The exact moment Harry's jaw dropped in horror was when he saw the expression on McGonagall's face.

All through his master plan – brewing the potion, setting the trap, getting caught and being dragged from the dungeons – he had a comforting ball of warmth in his heart that nothing too serious would become of him after the Headmistress consoled Severus, punishing Harry severely for his silly game. And when the Professor was at last calmed, and Harry reprimanded, they'd go back to his quarters and...

But upon witnessing the look she was giving the pair of them, he knew he was dead.

The cat had found the cream.

O0O0O0O0O0O0O

"So, Mr Potter, who is your lady friend?"

The splutter of surprise, as Harry realised what she was doing, was really quite amusing. The white fury on Severus' even more so.

The sudden explosion of noise, however, was enough to give her a vengeful headache.

Severus' hissing was almost as bad as the yelling coming from Harry, seeming to pierce her eardrums most effectively.

And as soon as the pair began to quiet, the portraits began to govern. Phineas Nigellus wittering away about how Slytherin was surely tossing in his grave at the injustice done to his house. Dilys Derwent was gossiping shamelessly with some female heads from the 19th century, about just how short that dress was, at which Snapes glower reached murderous proportions. Dumbledore, of course, was chuckling merrily in the background and Harry was giving him such a look that left no doubt in McGonagall's mind. He was spending far too much time around Severus!

"Gentlemen," She said firmly,"If you would be so kind as to lower your voices, then perhaps we could get this mess sorted out."

"Harry, my dear, did you destroy the potions classroom in any way, or injure anybody?"

"N-no Headmistress!" He spluttered, highly unsure of where this was going.

"Well then, I don't see anything the matter! You're both dismissed." With a twirl of her cloak she transformed into her animagus, trotting over to the door where she purred once and a stunned Severus Snape moved to open it.

Once through, she changed back just long enough to say,"Oh, and you're both to attend the Weasley reunion this Sunday at noon or you'll be chaperoning the Christmas Ball!" And with a purr, the tabby cat disappeared down the spiral staircase, leaving two, very confused, Professors in her wake.