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1.
Where you stick your face in a woman's breasts and shake your head back and forth really fast while going burrrr.
BURRRRR, I shouted as I gave my girlfriend a bronsky.
by AndrewR June 24, 2005
 
2.
when one place his/her face in a girls breasts and shakes his head while yelling bronsky
Dude i definetly gave that girl a nice bronsky!
by georgie the hammer September 25, 2003