A merkin is a pubic wig. The term is also sometimes used as slang/shorthand for 'American.'
Apparently actors doing nude scenes sometimes wear merkins. Heidi Klum did a scene involving an oversized, obviously fake merkin in the movie Blow Dry
. But where, you might wonder, could a casual curiosity seeker ever get their hands on such a thing? Just head on over to the American Merkin Company
(not safe for work, but only mildly so). Their motto is 'Handcrafting merkins for over 150 years,' and they offer a full range of this product in a variety of sizes, shapes, and colors. Or at least, so they claim. They display a number at the bottom of their webpage which you can call and order some up (1-877-508-6307). I couldn't contain my curiosity about whether this company was for real, so I dialed them up, only to reach an operator who had never heard of them. So I guess the American Merkin Company is a hoax. Their motto should have been a tip-off.