crazy awesome. way better than anything else or anyone else! hot
Guy 1: Dude, she was so redneckulous!
Guy 2: I can't believe you slept with the hottest/most redneckulous girl!!
Guy 1: Well...
Something that is so ridiculous that only rednecks would do.
Look at the wheels on this truck, see how high they are? This is redneckulous!