This is a very nice video that has a metaphor that I quite liked for different kinds of pseudoscience.
So some kinds of pseudoscience are so dotty and foundationless that they’re like kiwis: they are so wrong that they never get off the ground, and they don’t even try. Religion, for instance, is a total kiwi.
Chickens, on the other hand, try to flap mightily and might get airborne for a little bit, but can’t sustain themselves for the duration. These are pseudoscientific ideas that borrow a bit from real science and get it wrong.
I’ve noticed that some skeptics like to set aside kiwis as a special case that is exempt from criticism. I’d like to point out that neither kiwis nor chickens are able to soar.