What does "L" mean?

Definition: An L is a large doobie that requires two rolling papers. It's called an L because you stick the two papers together in the shape of an L, which produces an extra-large paper that lends itself nicely to rolling a big-ass cone.

Example usage for L

"I don't know how to roll an L, but everyone tells me it's just like a normal joint only when you lick the gum you're licking in an L shape."