U.S. teens have gone from haste to chaste over the past decade, giving up the grand slam for less-contact sports, according to a CDC study. Since 1991, horny high schoolers’ sexual experiences have decreased by 16 percent. Among those still doin’ it, condom use is on the rise, but some experts fear that Bush’s “just say no [to sex and condoms]” push will cause a backlash among the young and the restless.