All they wanted was some waves like they fucking surfing
Hold up now don’t get it twisted, I ain't hating, do your thing

from J. Cole – Grown Simba Lyrics on Rap Genius

Meaning

“Pretty boys” (that’s what they call metrosexuals in the ghetto) like to adopt “wave” hairstyles. J Cole thinks it’s ridiculous for men to worry so much about their look. Surfs up!

This could also reference the “spend their time flirting” line, and all they wanted were some “waves” from the gals, signifying recognition from them.

And of course, one needs to notice the wordplay of “waves” and “surfing”:

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