Fall Out Boy have been getting in touch with their hip-hop side as of late. After rocking the house at the 2015 MTV Movie Awards alongside Fetty Wap while performing the rapper's smash hit, "Trap Queen," they joined another rapper onstage at the Billboard Music Awards, which took place at the MGM Grand Garden Arena in Las Vegas.

Wiz Khalifa joined Fall Out Boy to perform their collaboration "Uma Thurman." The band hit the stage with vigor and were accompanied by a crew of dancers dressed in black dress shirts and black pants. "She likes to dance like Uma Thurman and I can't get her out of my head," sang Fall Out Boy lead singer Patrick Stump, who let those in the audience know he has the hots for the Pulp Fiction star. If he can't get her, he'll settle for anything close.

As the performance approaches its crescendo, Wiz appears dressed in an outfit similar to the dance crew and is his usual engaging self. The MC even goes as far as to striked a pose with the dancers without losing a step.

Fall Out Boy and Wiz may be an odd pairing to some, but they're more than familiar with each other. So familiar, in fact, that they are set to co-headline an upcoming tour, Boys of Zummer, which will hit more than 40 cities and is sure to be a massive affair. The performance trek will kick off on June 10 in Camden, N.J. The tour, which will also feature rapper Hoodie Allen, includes stops in Pennsylvania, North Carolina, Texas and California.

The rockers are nominated for Top Rock Group and Top Rock Song at the Billboard Music Awards while Wiz Khalifa is also set to take the stage again tonight to perform his latest hit, "See You Again."

See Your Favorite Rappers & Singers on the Red Carpet at 2015 Billboard Music Awards