Said it's hard to, finish these L's though
But me and my niggas, do it so well yo, yo

from Pro Era (Ft. Joey BADA$$ & Rokamouth) – Start To Finish Lyrics on Rap Genius

Meaning

An “L” is a long weed joint, or a joint rolled with two sheets connected one horizontal one: vertical:

Joey Bada$$ and his niggas have no problems finishing large blunts/joints.

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