a brush of his thumbs across them set my knees to buckle and my thighs to press together . damn , im sorry , i must have used too little gas . what i need the strength for now , is . a laugh rumbles deep in his chest , but he does n't let it cross his vocal cords . `` this is the 4th marines , sir ! '' if you had just come in , sat down at a table and played cards , i doubt if we would have even spoken . 