Tweens aren't the only ones declaring Willow Smith's hair-raising song "Whip My Hair" as their anthem. Even older guys like Jimmy Fallon (dressed as Neil Young) and Bruce Springsteen love it so much, they did their own rocker version of it on Fallon's late-night show. Check it out and tell us what you think. Here's what you had to say: Ashley commented via Facebook: "Love it! Jimmy outdid himself on this one." Tonya wrote via Facebook: "Imitation is truly the sincerest form of flattery. Way to go, Willow!"