You argue that it would be wrong to stab my neighbor and take all their stuff. I reply that you have an ugly face. I commit the "ad hominem" fallacy because I'm attacking you, not your argument. So one thing you could do is yell "OI, AD HOMINEM, NOT COOL."

[...] What you need to do is go one step more and say "the ugliness of my face has no bearing on moral judgments about whether it is okay to stab your neighbor."

But notice you could've just said that without yelling "ad hominem" first! In fact, that's how all fallacies work. If someone has actually committed a fallacy, you can just point out their mistake directly without being a pedant and finding a pat little name for all of their logical reasoning problems.

-- TychoCelchuuu on Reddit

Now you're just being paranoid.

Which is totally appropriate.

So...maybe.

"Because the dollar is dirty" is one of those pained, stretched explanations people come up with to explain why they do what they do, not the actual reason (even in some small part) the bookmark was invented and became popular.

The question wasn't "Why was the bookmark invented?". If it was, I might have, for example, tried to determine the first time someone used a bookmark (or when it became popular). Then I could have told you precisely how many dollars in present value that dollar would have been worth. That is, moving the goalposts in this way has made your quote worse, not better.

not the actual reason (even in some small part)

Not even is some small part? That's absurd. Can you not empathise in even a small part with the aesthetic aversion many people have to contaminating things with used currency?

This phrase was explicitly in my mind back when I was generalizing the "notice confusion" skill.

When the axe came into the woods, many of the trees said, "At least the handle is one of us.

Turkish proverb

I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops.

Stephen Jay Gould

We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.

misattributed often to Plato

Some say imprisoning three women in my home for a decade makes me a monster, I say it doesn’t, and of course the truth is somewhere in the middle.

Ariel Castro (according to The Onion)