The phrase Nancy Grace uses to add a sense of urgency to every mundane detail that comes out about whatevercriminal case she's been droning on about
Nancy Grace: Bombshell tonight!!! Casey Anthony paints her toe-nails in the Orange County Jail. To discuss this, here's three nobodies and a TV judge in four separate panels!
The phrase used by Jeremy Clarkson at the end of a Top Gear episode (before he got sacked). Since replaced by 'And on that terrible disappointment' on The Grand Tour.
Sometimes ends on an actual bombshell, almost always ends with Jeremy waving goodbye at the end.