93. Several years ago,four ravenclaws managed to brew the famous polyjuice potion around the time students would be taking their O.W.L.S.Attempting to relieve their worries with some laughs,they decided to snag a hair from professor Snape during class and added it to the cauldron.They then mixed a miniscule amount into everyone's pumpkin juice before breakfast,and the great hall was soon overflowing with Severus Snapes dying of laughter.
The four ravenclaws were never caught.
