I thought the dumbest month of this campaign would be August. I was wrong.

It's now October, and we're dealing with the "armrest truthers."

These are people like Donald Trump's spokeswoman, Katrina Pierson, and his surrogate, Dr. Gina Loudon.

Their claim: Jessica Leeds' accusation that Donald Trump groped her on an airplane in the early 1980s can't be true. Leeds says Trump put raised the armrest between them, but — aha! — armrests in first class don't move.

Here's Katrina Pierson making this argument, much to the amusement of The Atlantic's Peter Beinart.

One of the main problems with the armrest-truther line of reasoning is that, 35 years ago, some airplanes did have operable armrests in first class.

CNN aviation editor Jon Ostrower dug up some pictures of first class seats from TWA, National Airlines and Braniff planes as outfitted in the 1970s and 1980s, with armrests that go up and down.

Morons.