"There have been numerous theories about why people began to drop the negative particle, including sarcasm, lack of education, and that the phrase simply sounds better when omitting the not."

That's my theory to explain your misuse of the term.
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She was standin' alone over by the juke box, like she'd something to sell.
I said "baby, what's the goin' price?" She told me to go to hell.

Bon Scott - Shot Down in Flames