I was playin' the background like an adlib
But now I'm greedy like a fat kid
Adlibs are backup vocals to the main verse on a track, commonly fixed at a lower volume than the primary vocals. They literally play in the background. .
By playing the background, he was an underdog (and to some extent he still is) but now is emerging and getting cake like a fat kid. Heavy-set kids are overweight because they fail at the art of consuming food in moderation. .
To help improve the meaning of these lyrics, visit "BET Cypher 2012: The True School" by Jean Grae (Ft. Ab-Soul, Sarkodie & Talib Kweli) Lyrics and leave a comment on the lyrics box