My response would ideally be:
"Clearly, you're attempting to use base sensationalistic tendencies and stupid stereotyping to emasculate me as a person. I, however, would say that there is not one thing more masculine than a guy who is able to take the barbs and insults of spineless fools like you whose quiver is only full of shaking, fear, and stupidity rather than any actual intellectually poisonous arrows. Really, there's nothing more masculine than standing up day after day to twats like you simply because it's the right thing to do."