I need to burn this guy back? Any help?

[Rawrxxx]

So, this guy is being a total dick. I said, "Go lick a cow." He replied with, "Where do I meet you?" He pretty much just called a skinny girl a cow. LOL. -.-
Anyone have any suggestions on what I should reply back to him?

[Gerald s]

tell him to go crawl bake into his mom's basement like the troll he is.

[Sal]

Tell him his best bet is his mum

[Sylvia]

Let it go. Why even bother with this creep? Ignore him. Besides, if you waited this long to respond, you'll just look like an idiot for having to think this long to be "witty".