Mark Twain loved to hate golf, prompting him to pen, “Golf is a good walk spoiled.”

He may not have said that had he played Twin Oaks Golf Course in San Marcos, which is putting a fun twist on the game with themed tournament outings that mix the game with a little adult fun. OK, maybe more than a little.

There’s the Twin Oaks Brewery Tour, which features 18 beers from local craft breweries that golfers can sample while playing. There’s the Golfers Gone Wild event, a Spring Break theme that features a beer garden and Hooters girls. There’s also Luck of the Irish, played around St. Patrick’s Day, and the mustache-themed Movember. All have been big hits with local golfers.

Now, tournament sales director Scott Butler has a new one up his sleeve.

It’s called Endless Summer, a come-as-you-are tournament that will have no dress code. That’s right. You can put away the collared shirt and golf shoes. Bring your sandals, throw on some board shorts, a Hawaiian shirt and hit the links.

The shotgun event is set for 1 p.m. on Sept. 25.

“We want to push the boundaries on the perception of what golf attire really is,” said Butler. “Attire can actually be a deterrent to new golfers and we wanted to play into that. We’ve had success with all of the other events so wanted to give this one a try.”

The entry fee is $59, which includes 18 holes of golf, a bucket of beer and premium tequila tastings on the course. Beer-batter fish tacos will be available for $1 each. There will also be a raffle, with prizes including an overnight stay at Surf and Sand Resort in Laguna Beach, a TaylorMade R15 driver and a TaylorMade Aero Burner driver.

“It’s a Mexican theme with tequila tastings on the front and back nine,” Butler said. “It will be a scramble format so we can keep the pace of play going. And the only rule is to wear what you want to wear and have fun.”

To sign up for Endless Summer, call the pro shop at (760) 591-4700.

Marc Figueroa is a freelance writer who has been covering golf in San Diego for more than 20 years.