Okay, Someone Explain Why a Booty Clap Is Necessary???

LMAO! Okay, so Cam'Ron pulls up and tells some GHETTO DIRTY VIDEO VIXEN TO "talk about it hoe", after they came from a pool party. Her response was a booty clap! Because????
Check this video out! Posted on World Star Hip Hop!
http://worldstarhiphop.com/videos/video.php?v=wshh3xxAbBczatm04P9F