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1.
The musical instrument created by stretching the skin between the testicles. Especially effective in warm climates.

Also: scrotdrumming, to play the scrotdrum.

She wailed away on my scrotdrum last night with some pretty wicked beats.

The drumroll on the scrotdrum reverberated through the auditorium.
by bigsackattack April 25, 2009
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