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1.
Can be used in a lot of situations; someone giving you a bad look, someone "hatin'", etc.
"Why that nigga crumplin'?"
by Tassha October 20, 2005

Words related to crumplin'

fallin off frontin hatin mean muggin trippin
 
2.
What's up
what's crumplin', my nizzle?
by sallyemadavid April 17, 2011