And in case you're wondering, he'd do it again in a heartbeat.

Will Smith stopped by 'Jimmy Kimmel Live!' last night and, amongst other things, talked about 'Bad Boys 3', his new film 'Collateral Beauty', his 'tache and owning an NBA team and all were very entertaining refrains but none came close to Smith retelling the tale of how he once borrowed and never gave money back to a 'Fresh Prince of Bel-Air' fan when he got stuck on the road with no cash and no petrol in his car.

We won't spoil it for you, but it's gas (pun intended).