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How's this for a ribbon-cutting ceremony?!?!

Tony Hawk opened his brand-new restaurant in the most Tony Hawk way possible -- with some sick skate tricks on the half-pipe!!

The skateboarding legend just opened the GuacAmigos Mexican food joint in Newport, CA over the weekend ... kicking things off with a skate demo right in front of the restaurant.

The footage is really cool -- Hawk and his skate bros pull off a triple stack right in front of a huge crowd right in front of the restaurant.

Not only did the new business owner put on a show, he raised a bunch of money for his Tony Hawk Foundation with a silent auction too!!