Have you ever played with those set of balls where the 7 and the 4 are almost identical colors? Well I have and being color blind and stupid, I had BIH on the 4 ball and shot the 7 by mistake and my opponent called me on it... so he got BIH and apologized for not telling me because he didn't notice it until after I shot.
Well, I had my head hanging down while he took BIH and after he took his first shot, I looked up to see what shape he had on the 5. Lo and Behold.... he had taken BIH and shot the 7 instead of the 4. .... I chuckled quietly to myself and then announced the 4 was still on the table.... we both laughed. Two dummies at the same table... I felt redeemed.
So you missed the 7 with ball in hand ?