Go to the bathroom and fap onto the toilet.
From Create Your Own Story
You find yourself in the privacy of the bathroom. You take your pants off and jerk away to your heart's content. Sigh... sweet relief.
And then it happens...your mom walks right in. You were in such a rush to fap you had completely forgotten to lock the door.
"Oh, I didn't know you were in--uh."
You stare at her in horror, your hand still on your dick.
"Tom...." she said, "is this because you, uh, got a full-frontal view of Veronica's, um, boobs and butt, right?"
"N-no! What?! She's my sister!"
"Tom, you know you can be honest with me. I'm your mother. We've been open with each other about everything, and there's no point in lying about it. I saw your, erm, erection as soon as you hugged."
You didn't know what to say.
"Look, Tommy, I know you've been going through a lot lately even if you haven't said anything. Puberty can be a very difficult and embarrassing time for young boys. And there's absolutely nothing wrong with getting urges when you see beautiful women, even if they're related to you. I know you've been getting turned on when you see me. Is that true? Do you get hard?"
You feel the blood rushing into your cheeks.
"As your mother, Tommy, you know I love you and want nothing but the best for you. I know you've been very frustrated lately, would you like me to satisfy your urges?"
Your eyes widen. Was your mom asking if you wanted to...?