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1.
A saying often used when a person is picking their nose. People use this as a joke to let you know they've caught you.
"Hey Jessica, Pick-a-winner!"
by Chanelly Welly January 22, 2009

Words related to Pick-A-Winner

booger joke nose nose-picking winner
 
2.
It's often used when you're being spotted on picking boogers from your nose.
NB- (picking in his nose)
RB- did you pick a winner?
NB- very funny...
by AndrzejUK July 30, 2008