Possible Clues:

• Fed up at last with never being 1 across
• Not being offensive at last, at last
• Fed up at last with not being offensive enough
• Fed up at last at not being the attacker
• Not being offensive makes one fed up at last
• So fed up with finishing for the accused
• Fed up at last that there's nothing offensive about this
• Fed up at last without an attack
• Fed up at last with not being offensive
• Fed up at last with never being offensive