This is what happens when I have too much time on my hands.
I noticed, when somebody made their first post in the forums, it was just taken as a regular post, no one went out of their way to point out is was the persons 1st post.
So I thought up Post Virginity!!!
Every time somebody makes their first post in your topic, you get to say "I just stole your post virginity!!"
You can even put a little list in your About of all the people whose post virginity you've taken.
