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Not only is he Joel Madden's slightly more tatted up twin brother, but Benji Madden also doubles as a babysitter!

Yesterday we snapped Benji with Nicole and Joel's adorable tots, Harlow and Sparrow, and he tweeted, "Great family time in Uncle B-man Mode. Perfect day. Shout out Lil Doo Doo." While it's sweet that he's spending time with his niece and nephew, it looks like Sparrow may have needed a nap, as he seemed rather crabby when we Joel carried him around. Aww!