Wednesday's Random Slang-o-rama: Hassayamper

I was perusing the Dictionary of the American West by Win Blevins when I stumbled upon the unfamiliar (to me) term Hassayamper.

This is an old-time term out of Arizona, which seems very appropriate and serendipitous, since I will be heading to the Poisoned Pen in Scottsdale, Arizona, to participate in their Cozy-Con this coming Saturday, 1 p.m.!

So, any guesses as to what Hassayamper might mean?
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A little background: This comes from Arizona's Hassayampa River, which was the location of a gold rush back in 1863-ish. It was said, "If ya wash yer face in the Hassayampa River ya can pan four ounces of gold dust from yer whiskers."
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Give up? Here's what Blevins' dictionary has to say:

The gold rush on the river gave rise to the myth that whoever drank its waters, especially when drunk, would become a liar. The old-time Arizonans, when bragging or yarning, were called Hassayampers.

If you want to read a 19th century poem that lays it all out, check out this post titled "He Is Full of Hassayamp!" No Hassayamping, I promise, going on at Cozy-Con. Hope to see some of you there...

Think there might be a Hassayamper in this picture, hoping to spin his tall tales into gold??