My parents are nice. My mom is everyone's mom. :) All my friends call her Mom. Really. We're a cool family. Plus I don't think anyone would find that for another... 10 years.
In some states there are laws to the effect of it's okay as long as you're in a certain age range. Like... once I'm the age of consent in my state (which is actually 17, I think), I could date my 18 and 19-year-old friends without being jailbait because the difference in our ages is small enough.