"The real tender's paper, which is 70% cotton and 30% linen, is also nearly impossible to reproduce, so fakes should feel lighter than usual."

Odd that the linked Post article includes advice along those lines, but starts out with this: "The funny money, on paper that seems genuine and with watermarks and imbedded strips, looks so real that it can easily fool stores and even banks, they say."

The strips and feel of the paper are often because the bills are printed on what were originally genuine bills of lower denomination. They're dyed and reprinted.

"the use of flat black ink rather than ink that turns green to black"

To clarify, as is described in the Post story, that difference is only in one specific on the $100 bill.

Personally, I've come across a couple of fake $10 bills which were really easy to spot because of the feel of the paper. Each time as soon as I had the bill in my hand I was suspicious, and with a closer look it was obvious that they were poorly-done counterfeits.

Whereas L.A. is the capital of fake boobies. ( . Y . )

" Oh, and if they don't start flying around whenever some really patriotic music comes on, they're most definitely fake."

I guess you would prefer L'Internationale, or maybe the jihadi call to prayer that Pres. Obowmao sings so well.

Even genuine currency is totally fake (not backed by anything real) and only works because everyone agrees that it is worth something