When your thumb is numb and stick it up your bum like little jack horner did in his self titled poem. When you pull out your thumb, there's a nugget on it.
"...Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,..."*-
"...Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,..."*-
by Anderjeet Singh Curtinder December 28, 2011