McDonald's staff were forced to barricade themselves inside the restaurant after a row broke out over a 77p Fillet-O-Fish.
A group of teens had allegedly been asked to leave the Birmingham restaurant after one of them was only charged 77p or two Filet-O-Fish meals and a milkshake, it was claimed.
A fracas then kicked-off after the teenagers attempted to re-enter the premises, after they claimed staff used "physical force".
