Ouch! Kourtney Kardashian Performs Bikini Wax on Khloe

 Jason LaVeris/FilmMagic

It's been semi-painful shooting the second season of E!'s Kourtney and Khloe Take Miami.

On Wednesday's Lopez Tonight, Khloe Kardashian, 25, revealed that Kourtney, 30, gave her a bikini wax – and the result was not so successful.

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When they were at a lingerie store recently, Khloe said she wanted to pick up a present for her husband, Los Angeles Laker Lamar Odom, when Kourtney was like, "'Hello, you gotta fix your situation.'"

"I said, 'Well, I'm in Miami and I don't know anyone here,'" Khloe recalled. "We called, and nobody could take me."

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Remembering that she used to wax her friends in college, Kourtney offered Khloe her services free of charge.

"She's 30, college was, like, 10 years ago. Point is, she does not remember how to do it!" said Khloe. "That s**t hurt so badly! She burned me more than helped me!"

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Khloe also revealed how she keeps things "sexy" with Odom, 30, when he's on the road and she's in Miami.

They often "iChat," but "I call it 'iBoning,'" she said. "We're married. You gotta make it fun."

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