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2. booger finger
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.
1. booger finger
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..."
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