Quotes: Kryptonite Is Everywhere

Bass: I'm not calling Supes in on this... the guy's weak against magic and kryptonite. I'm pretty sure this Amon guy knows some magic, and any yahoo can get their hands on kryptonite. Heck, I bet this guy sells kryptonite ice cream.
Ice Cream Vendor: In two flavors! Regular, and now mint! Buy now!
Bass: See what I mean?

Spider-Man: You've already used kryptonite in a few of your movies. Shouldn't you move on to something different?
Superman: Oh, it's different this time. This time we have a whole MOUNTAIN of kryptonite!

Frankly I'm stunned that Superman doesn't just keel over dead whenever he steps outside, because it seems anyone, including people on desert islands, can get their hands on a crapload of Kryptonite.

Of course, the CORPSE has a kryptonite bracelet somehow. That falls into the category of an impossible anachronism...seriously. A corpse with a Kryptonite bracelet? They seriously expect us not to gag and retch at that?

There's a lot of clay around here in the ground, in Washington. Dig three feet down, you have clay.

Does everyone make pots?
Neal Bailey on Smallville ("Tomb")

Gold is lethal to Cybermen? What a rubbish weakness! Why do they even need a weakness? Doing this reduces from formidable mock humans to super hero villains that can be swiped down by their Achilles Heel. It's like saying throwing a bucket of water over the Daleks could finish them offůso they want to wreck havoc on Ocean World!

A young girl is possessed by a devil, and Constantine shouts, 'I need a mirror! Now! At least three feet high!' He can capture the demon in the mirror and throw it out the window, see, although you wonder why supernatural beings would have such low-tech security holes.

Every vampire story has different rules, of course. In the Dark universe, for example, the super-secret weakness of vampires is bullets. And cunningly, the security guards of the world all carry guns, having figured out that your Achilles Heel is any kind of physical damage whatsoever.

In a fight against Juggernaut and Cassidy in their spacious castle basement, Cassidy mentions the word 'tomb' to the X-Men. That's all it took to send Storm into a claustrophobic fit that leaves her in a heap on the floor for three straight issues. Imagine if he would have said 'Small Closet' or 'Size 2 Jeans.'
Seanbaby, "6 Superheroes Who Completely Lost Their Shit"