You just execute a good safety and say to your opponent "You're on two". He says "no I'm not". You explain his last foul and how he gave you ball in hand. He then tells you you're wrong, he made a good shot between fouls. Neither of you are lying. You both believe you are right. This happened to me in league play the other day. It turned out to be moot as she didn't foul but what if she did?