Bible Thumper
A bible thumper is an EXTREMELY religious person. Not just a regular christian, most regular christians are pretty chill. A bible thumper would be:
-A person preaching in the subway or the sreets
-A person who does NOT respect your religious opinion

-Going to extreme measures to practice their religion.
Guy: *sits down at the subway*

Bible Thumper: Excuse me, do you have a moment to talk about our lord and savior Jesus Christ?