Waves of vehicles streamed up Third Street from AT&T Park, honking horns at the screaming Giants fans who walked, ran and staggered down the street, many holding beers and yelling, “Let’s go Giants!” as homeless people weaved among them.

Marty Stack stood at the corner of Third and Market with his girlfriend, Brittany Robertson. Robertson wore a T-shirt that read, “Torture: Baseball Never Felt So Good.”

A baseball fan his entire life, Stack remembered the moment when he was 4 and an earthquake struck in the middle of the 1989 World Series. This season, from about July on, he built his days around listening to the Giants. He watched the clincher at Dave’s Bar.

“And the fact that we won it in George Bush’s backyard, it was perfect!” said Stack. “Every time they showed someone in the on deck circle, you could see George and Laura Bush sitting there in the background. It was like good vs. evil.”

Haley Devener, 24, was crossing Market Street with her boyfriend, Gabriel Shepherd. Both carried signs reading, “Authentic Giants Fan.” When the Giants got the final out, Devener said she called her mother, a lifelong fan, in Bernal Heights.

“I said, ‘We did it,’ and I tried to get it out before I started bawling,” said Devener.

“We did it,” her mother replied.

“We were both crying,” she said.