For some, the most important date in their sexual life history. Often connected to naked Claudia Schiffer, Sharon Stone or some other now elderly celeb. Usually celebrated with a long masturbation session.
Oh, today is the 20th anniversary of my first wank! I have to find a copy of Basic Instinct to celebrate it!
A: When did you lose your virginity, dude?
B: Hmmm, I can't tell you that. I can tell you about my first wank.
A: But you're 30 man...oh my goodness...