Bill Turnbull is the latest BBC presenter to join the list of broadcasters who have turned the air blue in front of the camera.
Turnbull accidentally dropped the c-bomb during a broadcast on cancer this morning, and if that look at the end of the clip is anything to go by, boy, did he know it.
Rather than the intended "clients", something slightly harsher slipped from between Bill's lips, leaving him red-faced and ready to hide head-down in the sand. But don't worry, Bill, it happens to the best of us.