You're having a boys' sleepover with your best friend, when his Mom comes in to check on you. You tell me you can't sleap because you don't like sleaping alone and I eventually offer you to come and sleap in my bed. I usually sleap naked, I hope that's OK... Later, you wake me up in the middle of the night telling my you feel really sore down there. I take a look at it for you and immediately know what you need to feel better.