Ooh na na, what's my name?
Ooh na na, what's my name?
Ooh na na, what's my name?
What's my name, what's my name?

from Rihanna (Ft. Drake) – What's My Name? Lyrics on Rap Genius

Meaning

Drake fucked her so good she forgot her name (damn!)

In all seriousness the song is about her originally being a one night stand but the dude liked her so much he wanted to get to know her. So she’s singing oh na na, what’s my name? Cuz he wasn’t supposed to remember…

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