Why is my knob so big?

I am a little ashamed of my knobsize. Whenever I walk about in shorts it looks like I have a boa coiled up in my trousers. Then there is the problem in school where the teacher is always oggling my krotsch. She told me that if I continued to grow like that she would have to inspect me for personal hygeen. I know she was looking me up. But being my young age I am also a bit ashamed to walk around naked in my house bkoz my knob is three times bigger than my dad and also my stepmother is looking me over pretty hard these days. Should I go to the school councillor because of my huge knob or just keep it to myself?