— It seems that one of my wife's best friends suddenly lost her husband. (...) So, naturally, she found herself cut off from her normal sexual relations, and, uh-- — She turned to you and you comforted her. I understand, sir, you really didn't do anything wrong. — Oh, you better believe it. I was incredible. — I see, sir. I think I can figure out the rest. All of Me, film Does the boldfaced phrase mean "I did do something wrong." Thanks. added: now I think he meant "You better believe that I didn't do anything wrong, because I was incredible."