PROMTS: Blasting Curse and 'warn/ed'.
"Ah, come on, Evans!" James Potter exclaimed, running a hand through his messy hair. "Just one date?"
"I'd rather go out with the Giant Squid, than with you," Lily Evans replied in a cold tone, without taking her eyes of the book she was reading.
"Honestly, you don't know what doing. What makes you think Snivellus is a better choice than me?" James questioned.
Lily pursed her lips. "Severus, is not an arrogant toerag, unlike some others," she said, with a disgusted expression, glaring at James with her piercing green eyes.
"Snivellus is a slimy git," James smugly retorted, causing Lily to drop her book with a loud 'THUD'. Infuriated, she stood up, gripping her wand tightly in her hand. "I suggest you leave now, Potter," she warned James, through gritted teeth, "unless you want to feel my wrath through a blasting curse."
James held her cold gaze for a second, before deciding that he did not need to be told twice.