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1.
The act of playing music through the loudspeaker of one's mobile phone. Usually done in public places, usually really pisses-off 99% of people near the offender.
The guy on the bus was phonin' until someone punched him in the face!
by thedodgymonkey August 20, 2009
 
2.
This is the act of being on the phone.
Joe: What arer you doing?
Mary: Nothing Jus phonin'
by 2cute321 August 23, 2009