John Cena and Nikki Bella go nude in YouTube video

John Cena and Nikki Bella are stripping down!

The newly engaged couple celebrated Bella's 500,000 YouTube subscribers with a sexy nude video -- well, it starts off sexy, anyway.

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"We are finally ready to have this huge celebration. Sorry it took a few days. It took a while to convince someone to do this," the "Total Divas"star says in the video, pointing to her fiancé. "This is a very good idea because why? We got half a million subscribers! So, we are ready to give all of us to all of you."

"I still don't think this is a good idea," Cena quipped, before giving in and pulling down his shorts as Bella removed her silk robe.

"I think my tube's on YouTube!" the actor shouted as he and Bella pranced around in their censored birthday suits. "I think my, uh, yeah ... everything is on YouTube!" Bella added.

Cena then bent over and let out a fake fart in Bella's direction. "What the f--k? Are you kidding me?" she replied. "God, what did you eat? Someone else's farts? You honestly ruin everything."

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