"For that quiet nigga that relocated down south
Coming back to floss"
Nigga get your molars right
Fix your grill
No plaque but a whole lot of cheese
This the drill

from Lupe Fiasco – Failure Lyrics on Rap Genius

Meaning

People try to floss (“show off”) by wearing jewelry in their mouth (“grills”).. And although Lupe has no “platinum plaques” he’s got a lot of money (cheese) or a big smile (cheesin).

DENTAL THEME:

Floss/molars/grill/plaque/brace/overbite/plaque/drill

Nas lyrics in — ‘New York State of Mind Part II’ contains:
Got your quiet niggas, that relocated down South
Comin back to floss

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