Yesterday, Mark Hemingway of the Weekly Standard snapped a photo of the absurdly inflated price board at a gas station “within walking distance of the White House” and put it under the cheeky headline: “The Shocking Photo the Obama Administration Doesn't Want You to See!”

The gas station in question is the Watergate Exxon, one of DC's charming rip-offs that is infamous for its price gouging. It's a trap for unobservant tourists who don't realize that they can buy gas across the street for significantly less money.

Judging from the wry headline his Twitter feed, Hemingway was making an insidery joke for Beltway media types. Some on the right didn't get it.

Glenn Beck's news website, The Blaze, picked up Hemingway's post and republished the photo under the headline: “Inconvenient Photo Taken At Exxon Gas Station Just Outside White House.” (The station actually is over a mile from the executive mansion.) As The Blaze put it: “The station is within walking distance of the White House and the listed price for its Supreme grade is frighteningly pushing $6.”

Coincidentally, National Review's Jonah Goldberg has a column today on how gasoline prices are a “debacle” for the president, and accompanying the piece is a photo of an Exxon price board with the Watergate looming in the background.

Scary! But as The Huffington Post's Jason Linkins documented yesterday, the price of regular gas at the Sunoco just across the street from the Watergate Exxon was $4.10 -- the same as today's average price for the DC area. Which means the Watergate Exxon's prices are inflated about 32 percent over the average.

The lesson here: If you're buying gas or trying to get a sense of where gas prices stand, avoid both the Watergate Exxon and conservative blogs.