bible thumper

two definitions:

1) Someone who is extremely evangelical in their religious belief. Many of them believe that their denomination is the one true denomination, and all others are wrong or evil. They try to make you feel like your life is a waste and use scriptures that have nothing to do with what they're saying to "explain" themselves.

2) Someone who screws with a very religious person.

Dude 1: "dude, freaking bible thumpers don't know what they're talking about!"

Dude 2: "dude, you are a bible thumper! Didn't you get with that devout christian girl?

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