What offended about his post, out of curiosity? The Rube Goldberg analogy (I found that rather apt), or the "Professor Lucifer Butts" aspect of it (which I'll also confess to finding not the least apropos nickname for a certain Red Hatted German)?
I was chiding your comment for being rude, not salacious.
The first meaning of "scabrous" in my dictionary is "having a rough surface", and that's how I meant it. There's a long tradition of using that word to describe rough-and-tumble discourse, and it seemed fitting. You didn't just smack another user, you smacked them with a pointy implement (a link to an insulting image). That's not ok on HN. Neither is smacking people without a pointy implement. And telling another user "You're a liar and a coward, and you know it" is right out—a bannable offense, although we didn't ban you for it.
I'm insisting on this more than usual, because we don't want the pugilistic approach that is popular in some related (by subject matter, at least) online communities to take root here. When commenting on HN, please eliminate incivility from what you post.