Skate Lesson W/ TikTok Star Addison Rae

What happens when the biggest skateboarding legend ever meets up with Tik Tok's most prominent star?!

OLLIE LESSONS, BABY!!!

Addison Rae -- one of the most-watched Tik Tokkers on the planet -- got a surprise meeting with Tony Hawk at The Berrics skatepark in L.A. this week ... and the two got to skating immediately!

20-year-old Rae explained to 52-year-old Hawk she's just getting into the sport ... and Tony LOVED it -- and offered her a million tips on how to ride like him.

No, there were no 900s ... but Tony helped her with some ramps -- and even gave her ollieing tips!!!

The clip is pretty cool, you can tell Addison is passionate about riding ... and Tony couldn't have been happier to see that.

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