The Day Lupin Wanted To Teach A Class About Dark Herbs But Accidentally Handed Out An Aphrodisiac

"Severus," Lupin asked his colleague, "could you lend me some Dark Herbs? I'm still looking for one."

"Yes, yes, alright," said Snape absent-mindedly, poring over a cauldron and grabbing for the list Lupin handed him. He tore his gaze from the simmering potion to read the list.

"Ah, yes, I have that one in stock, I believe." murmured Snape, reaching for a shelve hidden in the semi-dark of his storage cupboard. "Here you are." He handed Lupin a small, labelled vial.

"Thank you very much, I'll return it when I'm finished, okay?" said Lupin, delighted.

"Yes, very well," said Snape irritably, scrutinising his potion again and motioning Lupin to leave, which the gentle DADA Professor, of course, did.

The following morning, Lupin strolled into his classroom to find the students neatly seated already.

"Good morning, everyone!" he started the introduction. "Today's class will be about Dark Herbs. Now, I've brought a specimen of one with me, but as it's been dried, it will do you no harm. Lavender, could you please hand it out? Every table just a little bit."

He handed the small vial to Lavender Brown, who started to go round the tables to hand the herb out. Lupin smiled as several students sniffed the small tuft of dried, purple material and pulled faces at the smell. He didn't notice anything strange about his students, until Lavender came swaying back to the front of the classroom and Seamus and Dean started kissing very passionately indeed, all in a sudden.

"Lavender," said Lupin, sounding slightly alarmed, "come here quickly, would you?"

"Of course, Professor," said Lavender obediently, though with a strange hint in her voice. "Or can I call you Remus?"

Lupin looked around in stress and slight panic, as the children now also started to make out on the tables and the floor. His jaw dropped.

"Professor?" said Lavender tentatively, now standing nearer to him, and - in his opinion - too close for comfort.

"Yes, can I have that vial back, please?" Lupin asked, but, rather than waiting for a reply, snatched it from her hand and rushed out of the classroom.

In the hall he took his time to examine the vial, carefully taking notice not to sniff it. Only then, he saw what was wrong.

Instead of 'Acrophiliac', Snape's small, neat handwriting spelled 'Aphrodisiac'.