Passive-aggressive day at the ballpark

Once, at a concert, a woman sitting next to me thought the man behind her was talking too loudly to those around him.  The way she confronted him amused me; instead of shouting at him to quiet down, she turned to him, full of enthusiasm, and asked, "Wasn't that a great song?!"  Naturally, he couldn't offer an opinion, as he'd talked all the way through it.