Justin Timberlake and Mila Kunis certainly put their hands where everyone can see while onstage at the MTV Movie Awards Sunday night.

The 'Friends With Benefits' co-stars got grabby with each other while presenting the award for Best Male Performance to 'Twilight' star Robert Pattinson.

"Even though we're in the movie 'Friends With Benefits,' we've never dated," Timberlake, said, with Kunis jesting, "We're like brother and sister."

"[We have a] totally platonic relationship, which is why I can do this," Timberlake continued, grabbing Kunis' boobs. She jokingly returned the favor, doing some grabbing of her own.

The co-stars ignited romance rumors earlier this year after the both split from their longtime significant others. Kunis broke off her eight-year relationship with Macaulay Culkin in January while Timberlake split with girlfriend of four years Jessica Biel in March.