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1.
someone advising you to stop looking at them in an awkward manner
you need to fix yo' face
by Stef G. September 17, 2003
 
2.
Response immediately given to one who is mean muggin you or if you receive a mean ass look.
Also used in retort to an ugly face, demeanor, or appearence.
"Yo bitch! You best fix yo face! Or I'll be fixin it for you!"
by S.E. Girls March 26, 2008