How do you deal with mansplaining?

[Random63638]

I hate the term but I'm 99% certain I'm being contradicted by a male member of a forum I belong to because I'm female. It could be that he's just a twat and would do it to anyone though. Long and short, I'm right, he's wrong but he will not accept that. I tried supporting all my points with reputable references but they were rejected. Part of me says "walk away", "can't argue with stupid" etc but the tiger in me says "bring it on chump, I will destroy you!" But also, "fuck it, who cares" and "don't stoop to their level ". Conflicted. It's an engineering based argument btw so really not open to interpretation due to the 150 years or so of best practice and innumerable guides and standards available all over the internet for anyone who can read.

How have you responded to this ridiculous behaviour online? Any tips? Which is worst, letting the bastards have the last word or getting sucked into an argument that can never be won? Is #bekind holding me back?

DH does it half a dozen times a day. I just tell him to shut up. Works a treat.

Some really good advice and I do appreciate the solidarity because I felt like I was going slightly crazy. I opted for calmly explaining that I was basing my responses on my experience that other people may benefit from and he it was fine if he disagreed but I wasn't there for an argument. Obviously he came back for the final word and tried to goad me into responding further, so I think partly it was light trolling supported by the opinion of always being right.

I just resent that his bullshit questions appear to be equally weighted to my well researched and carefully considered answers. With it being online there's no way to know if people are able to draw their own conclusions. Some days I hate the internet.