A strangely compelling ejaculation 1) often said by Texans, rednecks, and other forms of American colonials.

May be followed by the sound of a car horn playing Dixie and voice-over narration provided by Waylon Jennings.2)

Like many things, it makes more sense with beer.

1)
No, not that kind.
2)
On Improbable Island, Waylon Jennings may be replaced by Damon Wayans, Wayland and Madame, Nipsey Russell, Charo, Pia Zadora, Harvey The Wonder Hamster, or Joe Bob Briggs.