Hypercorrection - http://en.wikipedia.org/wiki...
Aug 29, 2010
from
"Hyperforeignism: is a special type of hypercorrection resulting from an unsuccessful attempt to apply the rules of a foreign language to a loan word. The "Queen of the hyperforeignisms" is the word lingerie. Speakers of American English pronounce this /lɑːnʒərˈreɪ/, excessively depressing the first vowel of the French [lɛ̃ʒəʁi] to sound more like a "typical" French nasal vowel, and rhyming the final syllable with English ray."
- Simon