Receiving fellatio from a resident of an extremely rural area, such as a redneck. The giver of the fellatio may or may not be of distant relation to the receiver.
I met my second cousin out in the corn field and got some of that neck neck.
A command to tell someone to go away or leave them alone. The words themselves (neck and necker) are probably meaningless, though could be related to the older English phrase you've got some neck. Similar to buzz off, piss off, take a hike.
As can be gathered from the expression, it indicates a state of intense anger and annoyance, so much so that the person making the threat is ready, willing and able to inflict physical pain and degradation upon the person who has annoyed them. While it may not literally result in the removal of the offenders head and defecating into the stump, it will usually result in physical violence and a humbling of the person who caused the offence.
The expression that is believed to have originated with the British Royal Navy. It gradually became used within all branches of the armed forces and later spread to the civilian organisations associated with them before obtaining wider usage.
"Malcolm if you don't fuck off I'm going to rip your head off and shit down your neck!"
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.