Advice regarding rude people?

[CDNSushi]

"I killed them and ate their liver" is my go to answer. I get a head shake and then the inquiring party turns and walks away.

Hmm. I know how to say that in Japanese. Don't know if it would come out right to convey the fullness of the meaning.

However, I COULD just say: "I ate him." That requires only one word. And for added emphasis, I would just conjugate the verb "to eat" into the past regretful tense... So the figurative meaning would be: "Regretfully, I ate him."

I like that!