Top Definition
The point wherein excessive use of a Blackberry or video game controller results in lactic acid build-up in the thumb, and therefore pain and numbness.
His excessive texting resulted in a rather painful bout of BTS - Blackberry Thumb Syndrome, which actually needed prescription pain medication to remedy.
by Daryl Collison September 09, 2008
5 Words related to BTS - Blackberry Thumb Syndrome

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