A combination of Teabagger and Jihadist, a Teahadist is a domestic terrorist masquerading as a "patriot" in the US. The Teabagger feels that the only way to uphold truth, justice and the Constitution is to violently attack and threaten those who happen to disagree with said Teabagger's views. Phrases such as "defend the Constitution", and "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants" are often heard from Teahadists, although how much they actually understand what those mean is in debate.
It's only a matter of time before one of those Teahadists drives a truck bomb into a federal building, just like Timothy McVeigh.
Agitated racist who masks their racism with opposition to progressive governmental policy and believes that political disturbances and threats/delivery of domestic terrorism is an appropriate approach to achieving political change.
Did you hear of the teahadists who shattered the windows of Congressional offices belonging to Congress members who supported RomneyCare-Plus?