KYLE BUSCH's stunning wife left fans in shock after joining in a controversial NSFW chat on her podcast.

The Nascar star's partner, Samantha , had invited holistic doctor Marley Quinn on her podcast 'Certified Oversharer'.

The pair spoke on a number of topics that included tips for women to have a regular menstrual cycle.

This included Dr. Quinn recommending a supplement called "Her Packer".

She also gave her own NSFW personal testimonial, having used it herself.

She said : "This is certified oversharer, so I'm gonna overshare, my boobs have gotten bigger, well, and not like, extremely bigger, but definitely bigger, like, they're just fuller more of the time.

"And I started having orgasms in my sleep , like quite a lot, like my own.

"It's crazy. I've never said that, like ou

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