The Google Chrome/Firefox extension administers a set of sobriety tests before allowing the user to post on social media sites. Exes everywhere rejoice.

Webroot’s extension, literally named Social Media Sobriety Test, is similar to the “Mail Google” feature in Google Labs—which requires users to solve math problems before shooting off drunken emails. Sobriety Test puts social media sites on lock, including Facebook, MySpace, Twitter, Flickr, YouTube, and Tumblr.

Try to write a drunken rant on your boss’s wall at 2 a.m. and Sobriety test administers a “field” sobriety test like following a finger drifting around the screen with your mouse or indicating which side of the screen is blinking. If you fail the test you will be denied login access and in some instances the extesion will even post for you. On Facebook, a failed test will prompt the extension to post “YOUR DRUNK ASS NAME is too intoxicated to post right now” as your status.

This extension is genius on many levels—the novelty value alone is worth a test drive. And it just may boost productivity for all of us, cutting out our rubbernecking at the drunken rants that seem to spring up around us like so many boozy weeds. Had Sobriety Test been around four years ago Tucker Max would still be an over-educated drunken out-of-work lawyer.

Techies everywhere are racing to develop a sobriety app for iPhone—texting while intoxicated perhaps.