The art of slapping one's index finger against conjoined thumb and middle finger in a repeated fasion to show excitement. Popular motion by tobacco chewers to push tobacco to one side of the tin, but perfected by those with no other way to contain themselves.
This is my jam!!!....Glap...Glap...Glap
YEAH!.......... BOI!!!!.......Glap....Glap...Glap
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