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08/01/2012 06:52 am ET Updated Aug 01, 2012

Joan Rivers Cracks Jokes About The Challenges Of Dating At 79 Years Old On 'Watch What Happens: Live' (VIDEO)

It was as if the caller was a plant by Joan Rivers on "Watch What Happens Live" (Sun.-Thu., 11 p.m. ET on Bravo), but it's just that Rivers is such a consummate professional. When a caller asked her about her love life, it set Rivers off on a tirade of quips and one-liners.

"The only men I go out with have toe-tags.”

“I went out with this one old guy, he gave me a hickey and left his teeth in my neck."

The beauty of Joan Rivers is that she can riff like this on any topic. Either she's got vast repository of jokes in her brain and ready to go at a moment's notice, or she's just that quick on her feet. Probably, it's a lot of both.

The comedy legend certainly had both Andy Cohen and fellow guest Rashida Jones cracking up throughout the episode.

Catch "Watch What Happens: Live" Sunday through Thursday at 11 p.m. ET on Bravo.

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