Snape cackled evilly as he stirred his giant cauldron in the middle of potion class, totally ignorant of the students looking at him weirdly. "Mwahahahahahahahahahaha! This potion will make every one who smells its noxious fumes express their feelings through …SONG!" he added the last ingredient, puppy dog tails, to mess and it spewed out violent green sparks.

"Professor? What is that potion for?" asked Harry, raising his hand.

"Wonderful! The idiot-boy-who-just-can't-seem-to-find-the-time-to-just-die-and-stop-using-hyphens-incorrectly has volunteered to try my new potion which I have called…the…um….POTION OF DOOM!"

"Oh, okay Professor," Harry walked over to the POTION OF DOOM and took a whiff. "Sir…I'm…feeling…-" He suddenly stopped talking and suddenly found himself situated on a cheaply made plastic cross in the middle of the class room…with a diaper on…only a diaper. He sang:

Some things in life are bad,
They can really make you mad,
Other things just make you swear and curse.
When you're chewing on life's gristle
Don't grumble, give a whistle.
And this'll help things turn out for the best.

The entire class started getting into it. Lavender was head banging to the beat and Draco was waving a muggle lighter frantically, trying not to burn himself.

And...

Always look on the bright side of life,

Harry started to…whistle!

Always look on the bright side of life,

Harry then did it again.

If life seems jolly rotten,
There's something you've forgotten,
And that's to laugh and smile and dance and sing.
When you're feeling in the dumps,
Don't be silly chumps.
Just purse your lips and whistle, that's the thing.

The students had, by now, created a mosh pit of sorts, and everyone danced around Harry's plastic cross.

And...

Always look on the bright side of life.

The crowd went wild as he whistled again.

Come on...

Everyone took that as a sign to join in.

Always look on the bright side of life...

Unfortunately no one knew the next verse so they just screamed out nonsense.

For life is quite absurd,
And death's the final word,
You must always face the curtain with a bow.
Forget about your sin,
Give the audience a grin,
Enjoy it - it's your last chance anyhow.

So always look on the bright side of death,
Just before you draw your terminal breath,
Life's a piece of shit,
When you look at it,
Life's a laugh and death's a joke, it's true.
You'll see it's all a show,
Keep 'em laughing as you go.
Just remember that the last laugh is on you.

Pavarti yelled over the crowd's babble, "How true!"

And always look on the bright side of life,
Always look on the right side of life,

Come on guys, cheer up.

Always look on the bright side of life.

Worse things happen at sea, you know.

Always look on the bright side of life.

I mean - what have you got to lose?
You know, you come from nothing,
you're going back to nothing.

What have you lost? Nothing!

ahem

Harry blushed as the song ended and ran to his seat. The class went to their seats and acted like it never happened.

"Who's NEXT?" queried Snape.

)()()(((&&#&#$&#&$huhhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuhuuhuhuhh

TBC?

Monty Python's "Always look on the bright side of life" from Life of Brian