Rolling Stones discussed their upcoming tour, Mick Jagger's bum and many more topics during a recent Twitter Q&A session on Monday, May 18.

Ron Wood clued fans into their upcoming ZIP Code Tour, which begins on May 24 in San Diego and continues through July 15 in Quebec.

"We're playing things like 'Sister Morphine' from the soon-to-be-reissued Sticky Fingers that we've never played before," Wood said.

Keith Richards and Jagger also shared a few thoughts about the passing of B.B. King.

"Sad loss," Richards said. "He was one of the greats. I mean, he had beautiful style. B.B. was a great guy.

He was one of the true gentlemen. I shall miss him a lot."

Jagger talked about his favorite album by King.