Bravo / . 1 / 10

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?

RELATED: Stars dish on extravagant gifts

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.

RELATED: Stars on the sidelines

"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.

RELATED: The best pop culture acts of revenge

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!