WATCH: Justin Bieber leaves fan bloody after throwing a punch from a moving car

Is it too late now to say sorry?

Megastar Justin Bieber has been videoed throwing a punch at a fan, from a moving car, while on tour in Barcelona. You'd be forgiven for thinking this sounds a bit familiar, because a similar event took place less than five months ago here. The video shows a "fan" running up to Justin's open window, while he's in the backseat of his chauffeur-driven vehicle. The victim of Bieber's almighty jab appeared to be trying to slap or touch the face of the Canadian pop star, but Justin beat him to the punch, literally. The fan was left bloodied from the punch; maybe Justin's good friend Floyd Mayweather has been coaching him between gigs?