Sometimes, it's polite to boo.

From the AP wrap-up of the wild White Sox-Yankees game:

"Making his last start before turning 45, the Rocket pitched a perfect first inning before the White Sox got to him with a series of singles and doubles that eluded fielders. When Torre replaced him with left-hander Mike Myers, the fans at Yankee Stadium booed loudly, but the boos faded to polite applause by the time Clemens trudged to the dugout."

Loud boos, becoming sortapplause. That's not polite. That's pussy.