23 yrs old? you have got to be kidding

I was online recently on one of the websites I visit when this instant message pops up.  The guy was 23 years old  (It was about 10:30pm and I was kind of wondering if it was past his bedtime).  He wanted to chat - started off "hi" so I said hi back.  Then asked a somewhat inappropriate question - not real bad but...so I wrote back that I wasn't interested in anyone his age.  His response was "what difference did age make- age is just a number".  I told him that my children are older than him and I once again got the "age is just a number and it really doesn't matter".  I told him that it did in this case and to have a good night.  I had to close out of that site to get rid of the kid.
Like I mentioned earlier, you should have lived Janice Joplin, Bonanza, and the Viet Nam war if I'm gonna even think about chatting with you.
23 years old?  you have got to be kidding...I have already raised my kid.