no no no no no you both agreed you would pay when you get paid from your job yeah?? he cant ask for it earlier

just like if you get weed from a dealer on lay (pay back later on) till friday he cant ask for the money on monday and expect you to have it.

its tough shit

tell him that dont be scared of him its not your problem!.

no need to have a fight if hes your mate you should do what you can to sort him out with money but if you do your best theres nothing else you can do you cant give him money that doesnt exist and he cant really beat you up for it just tell loads of your mates and get them on your side