1) A different form of the word jack ass....simplier put for those that do not feel the need to curse in a certain situation...wether it be around someone who might take the cursing offensively.. or to say jack ass in a much lighter tone.
2) When referring to something that is gigantic and/or realllyyy huge.
When Willy Wonka gives you a stick of date rape gum, and your anus becomes fuckable, and then he must take you to his short, fat workers and "Fix you"... You know where it goes from there. :)
I gave Sally a piece of date rape gum and violated her plushanus while she was handcuffed.