Justin Bieber was anything but despacito on the ice over the weekend ... 'cause after the Biebs put home a goal in his pick-up hockey game, he celebrated like a mad man!!!
Watch the video ... JB's celly after tickling the twine was Tier One -- there was knuckle dragging, figure skating spins and even a sweet one-legged pose to cap it all off!!!
It's unclear where Bieber was getting in some on-ice run ... but we're all sure as hell glad someone brought the camera, 'cause Justin put on a show.
The 25-year-old scored a bunch of goals in the game .