Misdirection in action

Have you ever caught someone in something they said and enjoyed watching them squirm? This happened to me recently. I was mad, but I was also laughing on the inside as the person tried to evade answering my question. The person told me something (A) in passing that also revealed he had done something else by extension (B). When I asked how he knew about A, he tried to totally avoid the question by acting like he'd heard me ask something else. I could just see him trying to dance around it. Of course, it didn't work. I zeroed in and went for the kill. I was quite rightfully unhappy, but I was smiling on the inside too. As the saying goes- "Be sure your sins will find you out".