But your letter's still under my sea like seaweed
from Lupe Fiasco – Say Something Lyrics on Rap Genius
Meaning
A play on the word “sea”. Lupe is now the letter C on the eye exam, while others are under the C, meaning they’re not on his level and can’t be seen
Also a play on the word “letters,” which sounds like “lettuce.” Sea lettuce is a type of seaweed

- In the dictionary, the word “sea” appears before (or above) “seaweed”. The whole “lettuce”/“letters” explanation makes no sense. Furthermore, the apostrophe goes after the “s” in “letters” (plural possessive form). Finally, seaweed inhabits the ocean’s floor, hence seaweed being “under [the] sea”.
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