It would behoove thee

from Lupe Fiasco – Peace of Paper/Cup of Jayzus Lyrics on Rap Genius

Meaning

The definition of behoove is to be necessary, fit, or proper.
Lupe is saying that making music is not only what he does but it is what he should be doing be cause it is so fitting. The word behoove can also be spelled behove. Which is likely word play on Jay-z’s nickname Hova. Get it? “it would be-hove thee”

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