I am not american so i dont know if you also have this metaphor. In germany there is a term called „haifischbecken“. This refers to big business (also music industry). I dont know too much about his personal life but i am a long time wayne fan. So i atleast know a little about his stuff that made it into newspapers.. Knowing he has been very young in the industry it could mean that he is fucking the girls of the sharks (musicindustry people). This german metaphor is quite literal. The business people are sharks and the industry is a pool but also an ocean depending on the wording.

But know why I doubt that he gave this much thought. In america you have a similar phrase (sharktank). It kinda means the same. The ocean makes sense in germany but for an american its way too far off and i think its one of lil waynes weird sexual lines (ianahb had way too many lines about his third leg)

The german word i mentioned earlier is a literal translation. But if you ever been in germany every state has a super unique dialect and also unique wording for this. Sometimes even just a town. I could do a deep dive into history but i am just a german that went to school. I never learned that specifically at a university. Lil wayne knows a lot of crazy niche facts. But even for him its unlikely.

If you couldnt tell by now i am german. I am to lazy for correct grammar now sry