Examples

* Acid rap
* Alternative hip hop
* Bounce music
* Christian hip hop
* Conscious hip hop
* Contemporary R&B**
* Country-rap
* Crunk
* Dirty rap and Pornocore
* Electro*
* Electro-hop*
* Freestyle music
* Freestyle rap
* Funk carioca
* Game-Hop
* Gangsta rap
* Ghetto house
* Ghettotech*
* Ghettotronic
* Grime*
* Hardcore hip hop
* Hip hop soul***
* Hip house*
* Horrorcore
* Instrumental hip hop
* Jazz rap
* Mafioso rap
* Merenhouse*
* Neo soul
* Nerdcore hip hop
* New jack swing
* Pop-rap**
* Rap metal
* Rap rock
* Rapcore
* Swing hip-hop (SWAP)
* Snap music
* Turntablism
http://en.wikipedia.org/wiki/List_of_hip_hop_genres
LMAO I didn't even know either.

But this is what it means

Dirty rap, also known as booty rap, porn rap, or sex rap, is a subgenre of hip hop music that contains lyrical content revolving mainly around sex and sexual subjects.
http://en.wikipedia.org/wiki/Pornocore
http://en.wikipedia.org/wiki/Game-Hop