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1.
a person who is ur friend but is being a mean to you in a joking manner.
"claire u cant sit with us, sit over there by yourself"
"lingii ur such a meanie beanie" *pretend to snob them off*
by Claire Maloney July 21, 2005
 
2.
1) a euphemism alternative of addressing a mean person informally

2) an adorable way of addressing a mean person usually after a mean act, possibly in attempt to gain sympathy or favour in return
1) "U're a meanie beanie!"

2) "U're such a meanie beanie! Buy me that shirt! Pretty please?"
by Leona Lee July 09, 2006