It's worse of course when it occurs during a presentation or any form of public speaking.
And when it happens on live TV or radio, the chances are it's going to make its way on to the Net.
Jean-Marc Souami (screenshot France 3)
Such was the case with a slip of the tongue during the lunchtime news on France 3 on Saturday as weather forecaster Jean-Marc Souami, shared with viewers a rather...er...interesting meteorological outlook for the week ahead
Captions with unusually mild temperatures worthy of early Spring and plenty of sunshine especially in the south of the country were what he was about to introduce, but before he did that, he thought he would remind those watching that 2012 was a leap year or "année bissextile" in French.
You can find out the origins of the term (in French) here if you wish.
Anyway, you can probably see where this is going because of course Souami replaced "bissextile" with the word "bisexual" much to his embarrassment but also initial shriek of amusement from the news anchor Catherine Matausch.
Souami, who quickly corrected himself, continued, holding back his own laughter until the end when he offered up a somewhat sheepish apology for his blunder.
Ah the wonders of live telly.