Nesting (слэш)

"There was a potions accident during detention—isn't there always?— involving one Boy-Who-Lived, one Potions Master, a partially completed transformative draft, a fully completed aphrodisiacal potion, three drops of dragon's blood and a pinch of powdered phoenix egg shell."
Thus begins a loving slightly tongue-in-cheek tribute to all Mpreg, creature, bonding and/or bottom!Snape fics.