I found the forum at 14, and didn't sign up till my 18th B-Day. So I've been coming here for 11 yerars, been a member for 7 (says 8 on my profile whoops. Never claimed to be good at math,).
Not sure about underage fourms, The sites I was checking out where PFG MG and WB. So, I never saw any shenanigans or issues when I was on the UMD though.
I do remember the first time I really became aware of the underage rule I knew in common sense terms it was wrong but it didn't turn the light on so to speak until the Olsen twins were slime at KCA when they were 17. The backalsh from that made me never forget the ruie.
My Boat is made of Spinach and I hear the screams of Flamingos.