ODPOWIEDZ! - 官話

A friend of mine found this sign and really wanted to know what it meant. I've been trying to translate it, but I haven't had much luck, especially with the first and last characters on the top row. Here's all I've come up with: The middle one on the top row looks the closest to 忍. The bottom row looks like 火水地. The best translation I can come up with for the bottom row is "kerosene place". But since the sign was found under a hot tub, could it also literally mean "fire water"?