The giveaway that this was a fake email

The Claremont Insider received an e-mail, purportedly from conservative Claremont blogger Charles Johnson, that delivered a couple of expletives to a number of addresses.

Then the Claremont Insider noted the unusual signature block:

Ronald Mc Donald
Claremont Mens College
Claremontfascist.com
Claremontliar.com

(Note that's Claremont Mens College, not Claremont Mechanical College.)

However, the Claremont Insider wasn't convinced that this was a fake until he/she saw the date and time that the message was sent.

[W]e have never, ever, heard of Charles Johnson being awake at 10:38 a.m. on Saturday.

As of Monday afternoon, the Claremont Conservative blog has made no mention of the matter.