'That was so exciting!' Michael Bublé exposes underwear to answer caller's question on Watch What Happens Live

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Michael Bublé exposed his underwear on live television on Thursday during an appearance on Watch What Happens Live.

His audience included Bravo viewers, gobsmacked Broad City star Abbi Jacobson and host Andy Cohen.

The 41-year-old Canadian crooner had been asked by a caller if he really 'only ever wears' colored boxer briefs – so he unbuttoned his pants to prove it.

Underwear question:Michael Bublé was asked by a caller about his underwear during an appearance on Thursday on Watch What Happens Live

Michael at first took a peak while seated and then stood up to show his drawers. 

Lo and behold, he was wearing colored underwear.

'Oh my god Michael Bublé is like…that was so exciting,' said Andy, clapping his hands in delight.

The Feeling Good singer had gotten a little sexy earlier in the show too. 

Proved it: The singer proved that he only wears colored boxer briefs as Abbi Jacobson looked on

Cracking up: WWHL host Andy Cohen found the revelation exciting

During a game of Plead The Fifth he revealed that he's sent some very salacious pictures to women over the years.

'The question isn't what have I sent, it's more what haven't I sent,' he giggled.

'Really? You've sent a D-pic?' asked Andy, 48.

Popular game: Michael played a game of Plead The Fifth with Andy

'Well, look in your inbox later tonight,' joked the Sway singer.

After admitting he'd told former lovers he cared about them when he 'really didn't', the singer was forced into a game of Shag Marry Kill with former singing partners.

He opted to marry Shania Twain and Barbra Streisand, kill Mariah Carey and sleep with them all.

'Yeah, I'd shag them all to be honest,' he grinned.

Good answer: The singer revealed that he's sent salacious pictures before

In one hilarious Broad City scene Abbi's character Abbi Abrams described how great it might be to receive oral sex from Michael Bublé.

'He's such a crooner that I feel like he can do things with his mouth that no one else can do,' Abbi Abrams said.

'When I saw that, I was so proud of myself,' beamed the musician, who has been married to Luisana Lopilato since 2011.

Comedy reference: Michael laughed about being referenced in Abbi's show Broad City

Abbi was then asked why Amy Schumer had been such a 'target' after her 'Trump bashing'.

'I feel like when you're so present on social media you're just going to get it,' she deduced.

'Comedians shouldn't have to be careful,' chimed in Michael.

Funny show: Abbi co-created and co-stars in Broad City with Ilana Glazer

Michael also was asked if reality star Kylie Jenner was a diva when she appeared in his Christmas special and the singer said that she wasn't.

'Her mom gave me a ton of s***,' he revealed.

Michael explained that during a concert he was joking with his audience and welcomed 'Miss Kim Kardashian' onto the stage.

Good times: Michael and Abbi burst into laughter on the show

'I'm just messing with you, that b**** is never coming on my stage. She didn't put me in that video, I'm so jealus of Ray J,' Michael recalled telling his audience.

'All that her mom read was that I called [Kim] a b****,' he said.

Michael said he explained himself to Kris who was wondering what the family did to him.

In the clubhouse: Abbi and Michael got along just fine in the Bravo clubhouse

'It must be exhausting being Kris Jenner,' Andy quipped.

Abbi, 32, has just released a book in which she has illustrated the items inside celebrities' purses.

To promote the tome she was asked to guess what some Real Housewives had in their purses.

Ramona Singer of the RHOC had nipple covers and Siggy Flicker of RHONJ was carrying a portable fan.

New book: Abbi was promoting her new illustrated book Carry This Book

'It actually plugs into a wall, since my hysterectomy I don't leave home without it,' Siggy said.

Shannon Beador from the RHOC had a bag of homeopathic remedies.

Michael's career was summed up by Andy.

Guessing game: The actress and author played a game of What's In Their Purse

'When he sings it's the vocal equivalent of a hug,' he laughed.

The Home singer was asked about his relationship with David Foster, who used to be married to Yolanda Hadid.

'I think he's probably doing pretty well, he's all over the world, he's successful…I love Yolanda as well,' he said diplomatically.

Reality game: Michael and Abbi also played a game of Bravowood Scares against each other