l00der Posted in L Best definition l00der Someone who can’t use proper English on a chat or message board. Jay says: i dont no if u r gonna be stayin da nite 2nite. Alex says: That Jay kid is SUCH a l00der. How satisfied are you with the definition? Looking for l00der meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 19 times.