'but fellows , i 'm here to tell you that the grayboys have been messing with us since the late nineteen-forties , and i have been messing with them since the late nineteen-seventies , and i can tell you that just because a fellow comes walking toward you with his hands raised saying i surrender , that does n't mean , praise jesus , that he does n't have a pint of nitroglycerine shoved up his ass .