"The first comprehensive snapshot of Americans' sexual activity in almost two decades suggests a social landscape changed by HIV and AIDS and by an increasingly open national conversation about sexual acts other than plain old intercourse. Across the lifespan, Americans report they are masturbating, alone or with a partner, engaging in oral sex and experimenting with same-gender sex more often than they owned up to in the 1980s, according to a study released Monday. 'The sexual repertoire of Americans has sort of expanded,' said Michael Reece, director of Indiana University's Center for Sexual Health Promotion."