The activity of informing acquanitances or friends that you are proficeitnt in the art of percussion, and have received formal instruction in aforementioned musical discipline
"Ive had Lessins you know!"
Place head horizontal to table or bar, and rotate neck to 45 degree angle. Squint, and proceed to decend into a trance-like reverie whilst screaming:
Then proceed to drum without any discrenable rhythm using your two forefingers as 'sticks.'