I know one of my sons is lying to me.

I can see it in the corner of his eyes, and he knows that I know, so what now? He is 13, is going to be gone for the night, a sleepover with some friends, and I would like to call him every 10 minutes or so to make sure he is alright. He obviously doesn’t like the idea, so I lay low. I hardly call him when he’s out, but I would like to have the OPTION to call him if necessary. He doesn’t like that either……
He says his cell doesn’t have any credits, so I send him some, but they mysteriously disappear. He’s in a shopping mall, and it appears the phone doesn’t work in shopping malls. Weird!