the act of changing one's birthday when they forget to log out of facebook. and they don't realize it's done until they get hounded with "happy birthday!" posts on their wall.
kid: wtf, i log into facebook and i got 156456463 notifications wishing me a happy birthday. it's not my birthday!
guy: dude, you've been stfno'd.
guy: dude, you've been stfno'd.
by siggy_freshh October 16, 2009
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