Jake Gyllenhaal Slaps David Letterman Between The Legs, Calls it 'The Salmon' - Watch the Video!

Jake Gyllenhaal and a female friend walk his new dog along the West Side Highway on Thursday (November 27) in New York City.

The 33-year-old actor was all bundled up in a puffy coat with a hood. It’s FREEZING in NYC!

PHOTOS: Check out the latest pics of Jake Gyllenhaal

Earlier this week, Jake made an appearance on The Late Show with David Letterman to promote his latest movie, Nightcrawler. He performed his new “salmon” trick.

“That’s my favorite new thing to do,” Jake shared with a smile. “I need someone to do it to.”

“Do it to me,” Letterman offered. Watch the “salmon” trick below!

FYI: Jake is wearing a Fjallraven coat.