B-W-L- the master of errordition! But he is whack on target with most of what he said (I think). The rest is could be doodle-de squat.
Whack was used by the cowboys. Charles A Siringo, in "A Texas Cowboy," 1885: I was too weak to walk that far on account of my back being out of whack." One of several quotations in the OED.

Kilter- also a poker term. OED: 1895, "Suppose you had an utterly valueless hand dealt to you ............, this sort of hand is termed a kilter."
Lot of off- words. One we see a lot of here is off-rhyme: A partial or near-rhyme. OED. Lots of out- words as well.

Be sure to distinguish between out-of-kilter and off-kilter. The first is what the kilter says when he runs out of plaids. A Scotsman doing a strip-tease is an off-kilter. Q's own dictionary.

MMario- adding a quote to the 1628 occurence of kilter (found under kelter in the OED: "The very sight of one [a gun] (though out of kilter) was a terror unto them." Gov. W. Bradford, Massachusetts Colony (the word prob. brought with him from England). OED 1987 supplement.