Stu was readily nodding like he totally understood, and definitely not listening after the first few words as Donnie droned on once again like a very boring teacher. Even the joke could not escape the diabolical old guy energy, and Stu smiled back just long enough to make the then immediate roll of his eyes maximum devastating. "I already survived being stabbed by a psycho killer," he said, "I don't think losing an arm can slow me down."