Jack Anus 

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.

You're such a Jack Anus, but i love you anyways...

Jack Anus by XxUrbanGodxX October 19, 2009

jackanus

a less provocative insult you use when someone does or says something just plain retarded

jason:that dude right there shaved his pubes over the toilet and clogged the crap outta it.

you:whata jackanus

jackanus by Dice Breakus October 7, 2009