L nerd Share definition Flag "l nerd" is commonly used by pre-pubescent teenagers whilst trying to make a comeback. they probably watch a streamer named Aladdin floss. nerd-1: hey! this guy is poggers nerd-2: shut up *grrr* im very toxic nerd-1: im sorry bro nerd-2: L nerd L nerd by @pdgg June 8, 2021 Get the L nerd mug.