Melissa McCarthy finally met her musical idol, Billie Eilish — although not quite in the way she'd likely dreamt. Just a few weeks after guest-hosting The Ellen DeGeneres Show and debuting a hysterical spoofed "cameo" in one of Billie's music videos, Melissa stopped by the talk show again on Thursday with her The Kitchen costars Tiffany Haddish and Elisabeth Moss. Just moments after Melissa revealed that Billie's mom was her improv teacher back in the day (What a small world!), the "Bad Guy" singer popped out of a box to prank the actress — and holy smokes, she got her good. Watch the video above to see just how terrified yet ecstatic Melissa was to come face-to-face with Billie.
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