Just ask UFC champ Tyron Woodley -- who says he was confronted by Vin (in a non-violent way) at the "Guardians of the Galaxy Vol. 2" premiere because Tyron publicly picked Rock to win in a hypothetical cage match.
Woodley explained the whole thing on the "TMZ Sports" TV show on FS1 -- saying Vin "pulled up" on him at the premiere and explained why he'd kick that ass.
We're told Vin cited his experience as a bouncer back in the day before he was a movie star.
For now at least ...