If you thought it was scary enough when the Boston Dynamics robot dog SpotMini danced its robot ass off to "Uptown Funk," you ain't seen nothing yet. Turns out, SpotMini's menacing moves are even more upsetting when set to the funky, eerie tune of Justin Timberlake's 2006 hit "SexyBack." SEE ALSO: Even this futuristic Boston Dynamics robot can't make parkour cool Redditor u/MattShea replaced the happy Bruno Mars song with the much darker Timberlake one and uploaded it to the subreddit r/funny, even though it's not funny at all. In fact, it's pretty unsettling to watch. I put SexyBack over Spot the robot dog dancing, and it's way more disturbing now.