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1. The oldest member of a kid rock band that needs 2 days to recover from any concert that goes past 9:00pm.

2. Like how canaries were used to detect poisonous gases; A Tobia is the person in the office that is first hit by bacterias and viruses to warn others of the possible dangers that lurk.
"Tobia called in sick... wash your hand frequently!!!"
by brador April 01, 2005