"Sir, remember when I asked you about the shelf-life of potions?"
Snape slowly raised a brow. "Vividly," he drawled, "why?"
"Well, my project with Dumbledore is almost done and I had another idea-"
"-No."
"..."
"..."
"Professor," she stressed, "it's important."
Snape stared into the eyes of the Seer before him, and saw shadows of the future staring back. He sneered to hide his growing panic for the child.
"...explain your idea, and I will determine it's relevance."
"Have you heard of an insuline pump?"
Snape raise a brow.
"I want something like that but for generic snake antivenom."