Lyric discussion by Maniac Cop 

A "Rude Boy" is a Jamaican term for a juvenile delinquent. It's a term used frequently in Reggae music. In my interpretation, this song is about Rihanna wishing to have sex with a misbehaved young Jamaican gentleman.

"Come here rude boy boy can you get it up? Come here rude boy boy is you big enough?"

Here, the narrator wishes to ensure that the young Jamaican with whom she wishes to have sex has a big penis, and can maintain an erection for an adequate period of sexual intercourse.

"Take it, take it, baby baby Take it, take it, love me, love me"

The repetition of "take it," "baby" and "love me" combine to emphasize that the narrator is really horny.

"Babe if I don't feel it I ain't faking no-no"

Although the narrator strongly wishes for the young delinquent to insert his erect penis inside of her vagina, she assures him that if the sex isn't good, she will not pretend it is by faking an orgasm.

"Tonight I'mma let you be the captain Tonight I'mma let you do your thing, yeah Tonight I'mma let you be a rider Giddy up, giddy up, giddy up babe"

After inspecting his goods, and setting the ground rules, the narrator gives the Rude Boy the power to take the lead. She permits him to be on top in order to "ride her." This allows the Rude Boy a sense of control and masculinity by taking charge of this operation.

In conclusion, I think this song is about Rihanna fucking some dude.

And you are my hero. This song is very obvious and your "take" on what the song is about is PERFECT. :)

Whoa. Haha agreed.

WIN.

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