Spacker
The best playground insult of the 90s. After calling someone a Joey had gone out of fashion (if you were too young and didn't know who Joey Deacon was, it simply fell out of use).
Accompanied by pushing your tongue down into your bottom lip, and making mnnnnnnuuhhh-Spacker! noises.
When being particularly vicious, the insulter would also rub their now bulging bottom lip vigorously to draw attention to how much of a spacker the insultee was.
written by Ru*sel* Codd, left hanging by Edward