Japanese speakers/writers needed!

A friend of mine and I were talking tattoos the other day, specifically the Japanese style tattoos. We were discussing the koi tattoos, and I mentioned that Koi will generally eat and grow to fill their environment. As my friend is a rather large person, I said that he should get koi tattoo done, and have the phrase “You gonna eat that?” in Japanese under it.

He absolutely flipped out. He loves the idea. He wants to do it.

So, any of the Japanese speakers and writers on the board know how to write that phrase in Japanese?