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The Bad Boys from Boston do manage to stay busy when they’re not making music. Aerosmith drummer Joey Kramer has his own line of organic coffee called Rockin’ & Roastin’, and he was hyping it around Boston this week. Kramer, who lives in Texas these days, drew big crowds at the Big Y stores in Walpole and Franklin, where he posed for photos, signed autographs, and moved some product.