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Now, this is different.

In an exclusive clip from Tuesday's episode of WAGS, Natalie Halcro and Olivia Pierson visit the Sonya Dakar Skin Clinic in Beverly Hills for an unusual appointment! When the cousins arrive at the spa, Natalie greets the receptionists and says, "Hi, we're here for the Fanny Facial!" Ha!

"We're trying out the butt facials for our blog," Olivia explains. "You know, it's all about fashion and beauty." Natalie adds, "This is new to us, so it should be interesting." To say the least!

According to the website, the Fanny Facial "will smooth and buff your derriere into pure perfection." Who knew?!

Esthetician Sonya Dakar greets the ladies and shows them to their room for the procedure. She gives them each a special pair of underwear, but the girls have no clue how to put them on!

"It's like what our grandmas used for tampons," Natalie says. "I mean uh…maxi pads."

Just wait, it gets better.

When Natalie and Olivia are finally situated on the table, Sonya comes back in to begin the beauty—er, booty—treatment. But before she can work her magic, Olivia has one very special request.

"Can you start it off with a smack?" she asks. LOL!

Watch the entire hilarious clip above!

Don't miss an all-new episode of WAGS Tuesday at 10PM on E!