Any type of sexual activity that leads to orgasm including masturbation, anal sex, oral sex and intercourse can trigger sex headaches.

CNN: Sex headaches

"There's been some speculation about whether teenagers were substituting oral or anal sex for vaginal sex and I found that wasn't so, " says Rosenbaum.

CNN: Virginity pledges don't mean much, study says

The most telling question in two days of oral arguments on same-sex marriage came yesterday in U.S. v.

WSJ: Best of the Web Today: Maybe Scalia Was Wrong

As the Supreme Court prepares for its second day of oral arguments concerning same-sex marriage, gay rights supporters are flocking to a viral image being spread by Human Rights Campaign: its logo.

FORBES: Behold the Same Sex Marriage Solidarity Meme

In March, the Supreme Court will hear oral arguments in two appeals cases related to same-sex marriage -- California's Proposition 8, which bans same-sex marriage and the federal Defense of Marriage Act, which denies federal benefits to same-sex couples.

CNN: Washington National Cathedral to wed same-sex couples

Outside the Albany courthouse yesterday afternoon, same-sex couples from around the state, who also had been refused licenses, lined up to attend the oral arguments.

NPR: New York Court Hears Gay Marriage Arguments