A branch of obnoxious drivers who pack their cars with ridiculously powerful subs, and blast shitty, overly synthesized, "thumpy" rap music to assert their dominance. In most cases, thumpers can also be referred to as rattlers, due to the intensely low frequency vibrating shaky or loose parts in the car's frame, emitting an even more annoying rattling sound.

A pathetic person that sees conspiracy behind every post in Craigslist's Rants and Raves. A Thumper believes all posts that offend him are the work of one person. He also thinks that all flagging is done by that same person. A Thumper posts repeatably, with a complete lack of creativity, desperately trying to rally the troops to the validity of his twisted view of reality. He fancies himself as a leader, but alas has no followers.

a very religious person. one who always refers to the bible in everyday conversation.

When you're going down on someone or having sex and their leg won't stop twitching...

an absolutely bangingly steamey shit!

Short for bible thumper - an overly religious and/or annoyingly religious person, especially Evangelical Christians.

a slang term for the main male sex organ; a penis

a stripper from the novel House of Leaves, with Thumper from Bambi tattoed on her innter thigh.

A really sweet, but fallen, woman.