Worm

A rider who is either new to the stunt scene or has just hung around and not made any effort to improve their wheelies or other stunt skills.

Person 1: yo you trynna hit the Wheelie Wednesday ride tonight?
Person 2: hell yeah man but you gotta be careful cus there has been a lot of worms launching squid missiles in and around the pack lately.
Person 1: nevermind, i'll just hit the lot this weekend, I'm not trying to get injured by some worm on a grom.