A religious Zealot who pressures people to subscribe to their own religios beliefs, even after the target has said they are not interested. Mormons and Jehovah's Witnesses are particularly notorious Bible Thumpers.
a bro: "Hey,there are some Mormon Missionaries at the door to talk to you!"
me: "Damn, I told those Bible Thumper Mormons to go away, where is my Pepper Spray at?"
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