verb: To speak disparingingly about another person. To say ill words behind someones back.
Don't shake my hand, I know you talk greasy about me and my folks.
by Ken215 June 25, 2006
1 more definition
To rap, usually to rap well.
50 cent talk greasy (talks greasy), but the kid in malibu doesn't.
by dimelis_16 May 09, 2007