Two years ago macho muscle man and Fast & Furious star Vin Diesel surprised the internet by doing an emotionally wrought rendition of Rihanna's tear-jerker, "Stay," for Valentine's Day. It appears karaoke is the buff babe's favorite activity, because he's back at it again, this time with an admittedly pitch-y cover of Voice coaches Gwen Stefani & Adam Levine's "My Heart is Open." Like Vin says on Facebook, where he uploaded the video: "Happy V-Day," people.
Diesel's recently uploaded a karaoke cover of Sam Smith's "Stay With Me"—and don't even get us started on the time he shared his personal dance for Beyoncé's "surfbort" section of "Drunk in Love." The guy really knows how to get into it, even when he's using a webcam in a completely empty room by himself.