Dusting off this old chestnut from Twitter user Ibisnake - problem solving at its finest.

Eh, if it works, it works.

"I didn't ask how big the room was, I said 'I cast fireball!'" (Please note how old-school fireball worked, in terms of volume... 2" is either 20 feet or 20 yards. Casting it in a small room will produce a lot of backdraft.)