Today's talk you might've missed:

• Sensitive gag reflex? Be grateful you didn't catch Lady Gaga's SXSW show. Part of the set featured a performance art piece in which a woman vomited on the pop star, not once but twice. [BuzzFeed]
• About that "Rocky" musical: survey says it's actually pretty good. [Variety]
• Kristin Cavallari hasn't vaccinated her 18-month-old son, Camden, and she doesn't plan to vaccinate the baby she has on the way. "I've read too many books about autism, and there's some scary statistics out there," she's said of her decision. [Us Weekly]
• Some of us head to the local shelter or rec center to volunteer. But when Arnold Schwarzenegger gets involved with charity work, he gasses up the M47 tank and runs things over. [Time]
• Backstreet's back with a new North American leg on their world tour. The band announced Friday that they're going to kick off a summer trek in Canada on May 3. [HuffPost]