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In an instant, Brandi Glanville and Jeff Lewis' appearance on "Watch What Happens Live" went from amusing to aggressive.

But, was it all a joke?

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The fireworks started after host Andy Cohen asked the "Real Housewives of Beverly Hills" star to run her fingers through Jeff Lewis' hair to see if it was a toupee. Jeff, who stars in Bravo's "Flipping Out," quipped, "Can I get an STD from that?"

Brandi, seemingly angry, threw a glass of wine on him … But, she said it was actually all a really good acting job by her and Jeff, all in an effort to fool the host of the show. She even feigned (or was it real?) to cry.

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"People @JLJeffLewis & I were joking! We are good friends! I turned around cuz I couldn't stop laughing we wanted to fool Andy! #wefooledandy," she tweeted shortly after the live episode on Jan. 6. "@JLJeffLewis do I get a Golden Globe??? @Andy believed us!!"

The incident was planned before the cameras turned on ... allegedly.

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Clearly, people weren't buying the idea that this was all in good fun, so Brandi continued, "Just getting bAck to my hotel -- It was just jokes for @Andy sake although @JLJeffLewis might have deserved it !#heartu #1st2foolAndy." She even posted a photo of her and Jeff making nice and kissing after the show to prove her point.

If this truly was a joke, Brandi, forget the Golden Globe, you deserve an Oscar!