Is it normal : my dad found pics...

A couple days ago, i was supposed to be with my friend. My friend were lost and could not find my home, so i texted the guy and asked if he was lost. He was lost, so i had to go out and get him. He was about 2 mintutes away from me. I was listening to music before i went out to get him. When i got home, i saw my dad was exiting all the folders and pics on MY laptop. I asked him what he was doing, he said * nothing, we'll talk about it later * . then i checked my pc. I first when to the * trashcan thingy on pc's * and saw he deleted my * Sexy wallpapers * since we are muslims ( means we can't look at * SEXY * women ) long story made short ( They are REALLY relious, but im more liiike....... Free, soo , i can't see why its a sin to watch porn or have sex, but enough relion ). A couple hours later my mom came home. She had a sad look on her face, then i knew my dad had told her something. I asked her later why she was sad/angry. She said that my dad had told her that i have done something wrong, but he didn't tell her WHAT. Later that night i call my dad and ask him what he had found. He said its not a *good* thing to have pics. of ur dick on ur pc. Then i said sorry and so on ( even that i knew i had not done anything wrong ). but yeah, next day he says he have the pics. of my dick on a usb and his iphone... and im kinda FREAKED out by this.. Is my dad normal?? Is it wrong to have pics of ur cock on ur pc ( i use it to send it to my gf ) ??