Tyga's got the blueprint ... brag about having sex with your juuust 18-year-old GF Kylie Jenner -- and everyone will pay attention to your new music.
Tyga just dropped a new mixtape, which includes the song, "Stimulated" -- which includes lyrics like: "They say she young ... I shoulda waited ... She a big girl, dawg ... When she stimulated."
There's more ... like a direct reference to "penetration." The "young" line makes it seem like Tyga's talking about Kylie, but who knows?
After he dropped "Pleazer" -- the one where he rapped about "vagina juice" -- he insisted the track was NOT about Kylie, but some other random chick.
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