The night I turned 18 I was drinking with Chick Corea.
It happened that in 1995 he had a classical music project involving some local orchestra musicians in Modena, Italy, where I was living at the time. One of the musicians was a friend of mine's brother who invited me to the dress rehearsal in a renaissance villa. Concert was good.
After the concert, I got introduced to him and he asked me if I liked it. Shortly after I was drinking with him and others, and I turned 18 right there.
:)