Originating from typically southern US fundamentalist Christian sects given to evangelizing in a very outgoing, rumbunctious way, often characterized by a religious bigot standing on a street corner, with or without foam around his mouth, shouting about how we should all turn to Christ, whilst vigourously thumping his soft covered bible for emphasis.<br />Their actions usually do more harm than good to their cause and bring into disrepute and ridicule those more reticent Christians.<br /><br /><br />bible thumper definition by Urban Dictionary
