The P---s Talk

Y'all! Noah is obsessed with p---ses. He asks us all the time if so and so has one. He talks about them all the time! I don't know what to do about it. I don't really have experience in this area. I have two sisters. I didn't know what a p---s was until my sixth grade sex education class. (Okay, not really. But you understand....) Look I can't even type the word out. When he asked us after his Christmas party if Santa had one or where is Lighting McQueen's p---s, it was funny and a cute little three year old thing to laugh about when he is older. A story to tell at his rehearsal dinner (who am I kidding, I couldn't say p---s out loud in front of all those people!)But now it is out of control! It is all the time. Tonight I was so afraid that he was going to ask the bag boy who helped us out to the car about it. Please help me Moms of boys......How do I handle this???