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When one tries to do actions on touchscreen immediately after picking their nose. The booger remnants on the finger cause the finger to stick to the surface of the touchscreen.
I was about to get a top score on my tablet when I picked my nose and forgot to properly clean off my finger...booger finger.
by buger, snot, mucus, digit January 28, 2012
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2
a person at a club or bar who is asked by a bouncer or management to leave and refuses (much like a booger stuck to a finger won't get off).
"Sir, I'm going to have to ask you to leave."

"No!"

"Man, what a booger finger..."
by sketchballitudinator December 29, 2008
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