You are a boy, in Slytherin and you where in Slughorn's class, making the amortentia potions, when the professor spoke up.

Slughorn: Does anyone smell anything yet...?"

You: "All I can smell is Mattheo's shitty ass Cologne."

Mattheo looked at you with a smirk before looking back at his potion.

Slughorn: "Alright. And Mr. Riddle, Do you smell anything?"