Actually, I think he was stoned.

Via The Hill:

Vice President Biden (D) said he declared his support for same-sex marriage in a surprise campaign-season endorsement last year because he “couldn’t be quiet about it anymore.” […]

Last May, in the heat of President Obama’s reelection efforts, Biden went on “Meet the Press” and said he was “comfortable” with same-sex marriage. Obama had not at that point announced his support for gay marriage, and the vice president’s endorsement left the campaign lurching to clarify the administration’s position.

“I got blowback from everybody but the president,” Biden said. “I walked in that Monday, he had a big grin on his face, he put his arms around me and said, ‘Well, Joe, God love you, you say what you think.’ I knew he agreed with me. It wasn’t like he was in a different place.”