Top definition
an addition to the derogatory act of raising the middle finger, the opposite arm is raised simultaneously while flexing the bicep to give an emphasis of strength and intimidation.

note: at times an ordinary middle finger doesn't articulate the extreme disdain one might have for another, in these cases an atomic finger is more appropriate.
The other day I saw my ex-girlfriend holding hands with my best friend, so I dropped everything and gave them both an atomic finger.
by CL Media March 21, 2012
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