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Meredith Vieira dropped the "s---" bomb on NBC's "Today" show on Thursday while co-hosting the show's fourth hour with Hoda Kotb.

Vieira dropped the word while seating for an interview with Al Roker for his new book "Never Goin' Back" about his struggles with weight loss.

After a commercial break the cameras came back to Vieira and Kotb when the veteran TV-host apparently dropped one of her informational cards and said "Oh s---" to laughs from Kotb and Roker.

"Yes! Yes!" shouted Roker.

"Just go ahead and put in on Gawker immediately," said co-host Kotb. 

"I'm so sorry. I'm so sorry," an embarrassed Vieira said as Kotb picked up the card from the floor.

Seconds later, "Today" show producers threw in a bleep to make fun at the incident.

"Little late for the bleep," laughed Kotb.

This is not the first time Vieira drops the word on live TV.  In 2010 she let an "Oh S---!" go out while filming a segment on a national campaign to stop texting while driving for the "Today" show.

Last month, Vieira returned to ABC's "General Hospital" to reprise her role as Bree Flanders,  the owner of a high-class call-girl business who had attempted to hire one of Luke Spencer's girls.

In previous interviews she has chuckled at the notion of having the reputation as somebody willing to take on nearly everything thrown her way, which includes stints on "The View" and "60 Minutes," amongst other notable appearances.

"I was sure I was flushing all my credibility down the toilet.  (Laughs) And I pretty much did.  But it all ended up being great.  Now, as you can see, I'll do anything," she said.

Tags: Meredith Vieira