The open mic: Second only to Twitter in its ability to provide public figures with the quickest possible path to a public relations disaster.
And while the former has snagged such victims as Gilbert Gottfried and Anthony Weiner, the latter continues to present a more old-school minefield, specializing in tripping-up politicians with still-surprising regularity.
The latest victim is President Obama, who was overheard discussing missile defense with Russian President Dimitri Medvedev Monday, telling him, "This is my last election. And after my election, I have more flexibility."
So add that one to the always-expanding list of open mic slips. Here are five more of our favorites -- and in an effort to keep it relatively clean, we're skipping any with unedited expletives. So you're off the hook, President Bush. And same for you, V.P. Biden, with your unrestrained four-letter enthusiasm for the new health care law.
President Reagan jokingly declares war on Russia. Russia does not laugh (1984)
Reagan was caught messing around before a radio address, declaring, "I've signed legislation that will outlaw Russia forever. We begin bombing in five minutes."
Rev. Jesse Jackson hits below the belt on Obama (2008)
We understand being underwhelmed or bothered by a commander-in-chief. But, that was a vivid way of putting things, Rev. Jackson.
Carly Fiorina takes on Sen. Barbara Boxer's hair style (2010)
The former Senate hopeful took a shot at her opponent's hair, saying it was "so yesterday." As is that phrase.
Charles Barkley bites the hand that feeds him (2011)
The basketball analyst/Weight Watchers spokesman was chatting during a TV break, but was still live online, when he began explaining how being paid to shed pounds "is a bigger scam" than being paid to talk about hoops.
Pilot's offensive rant: This is what regret sounds like (2011)
A soon-to-be-suspended Southwest Airlines pilot offered up his unfiltered thoughts on the quality of female flight attendants and which cities have the best looking women. Along the way, he tosses in some insults at homosexuals, old folks and overweight people. Ladies and gentlemen: A reminder that open mics are everywhere.