now he owes the biker guy money, next thing you know, the biker guy will ask him to take care of someone... Parkour guy (lets call him parkour guy) kills the wrong hit...then what you ask?? he is on the run from the police... he has the biker mafia on his ass... the guy calls his family to tell them to go somewhere safe.. phone rings, its biker guy...Finish the job bitch, or else you will never see your family again!! hangs up ...In dispair the guy calls up Liam Neeson to clean up this mess. Liam tells the biker how much of a fan of his biking skills he is and apologizes saying it was only a movie... the guy hangs up, steals an armored truck with money from an atm machinec; rams it into a gun shop killing the gun shop attendant in the process, gets some guns from the gun shop. hunts down the proper hit ; cuts off the hit's head; brings it to his house; lays it down infront of biker mafia boss' feet... takes family into armored truck as biker mafia crew watch from their house's door; truck is parked sideways so that the peek hole is facing door of house... the parkour dude pushes out an m4 and before the mafia realises it he unloades 1 magazine on thier asses. they fall dead.

Everything is okay now

he tells his family in despair, its all over

everyone in the armored truck crying, police get called by angry neighbours, he gets out of truck re assuring the family; wife with mascara dripping down her cheeks; kids crying; he gets handcuffed, wife in a last minute dramatic selfish move, takes one of the guns in the truck and puts it in her mouth; the parkour biker looks back at the armored van one last time as in to say good bye, his wife is the one to say good bye... a muffled pop is heard from outside. the lady took her life... kids are scarred beyond therapy. his life is ruined... biker mafia is over....ALL BECAUSE HE DIDN'T GIVE THE GUY SOME GAS MONEY!

tl;dr STEVE YOU OWE ME FUCKING GAS MONEY!