In a transparent appeal to old folks, YouTube is kicking off a new "Living Legends" monthly series. First up? The creaky rockers from the Rolling Stones. Mick Jagger and Keith Richards, who chimes in while sitting on the john, are taking questions from the audience — "especially the burning ones." So if you need advice on what brand of topical analgesic reduces hip-swagger-induced soreness, or the best hemorrhoid cream for transcontinental flights, now's your chance. Video after the jump.

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