While I don't know anything about Belgium, (or anyplace; today I used "neutral like Austria" in a sentence when I should have said "Switzerland" or "Germany"), I do know about Ravers.
What's not to love about a culture based on candy, drugs and dressing in the dark?
Just as I was starting to question this Trend Prediction, the Fashion Gods delivered; behold Jeremy Scott's Latest Collection:
13 year olds on their way home from a month of ecstasy binges
and unprotected hookups.
Surviving on a diet of Red Bull
You can almost see the holes in their brains
and feel their Mothers' desperation.