Almost Famous Easter Egg - Highschool Sign

So, Almost Famous is the true story of the director Cameron Crowe. In the movie William Miller (who represents Crowe as a child) is in his senior year of highscool at the age of 15. The same was true for Crowe. During the beginning of the film William Miller is seen leaving the school parking lot and in the background is a sign that says "William Miller is too young to drive or fu*k." Well, the interesting thing about this is that a sign was actually put up at Crowes highschool that said that about him when he was a senior.