Silly! You can't create a forum
You can ask the Administrators to create one in the sticky in this forum: http://www.virtualteen.org/forums/forumdisplay.php?f=14
The Gay Bar is a diary, owned by a couple of members who are interested in what the diary is for. Be sure to read the "Information About Diaries" thread in the forum above - you can't get a member forum yet.
When you meet the requirements, post in the diary request sticky.