How popular is 'brefass' in modern American vocabulary?

This is an abbreviation of 'breakfast' that I have found myself paying extra attention to recently. In fact I have even heard my mother use it on a regular basis. Is this common in modern spoken American vocabulary, or is this purely the construct of a regional dialect? We are native speakers from the Great Lakes region of The United States.

Other words that fall under the same category:

• "I don't know" == dunno
• "kitchen" == kinna (rare)
• "library" == Libary (With an extra accent on the 'i', L-EYE-barry)
• "school" == skoo
• "jewelry" == joo-ry
• "math" == maff
• "Italian" == Italian (With an extra accent on the 'i' instead of the first 'a', EYE-talian)

Solution 1:

I'm from New England, and I've only ever heard brefass/breffis out of the mouth of a little kid who couldn't pronounce breakfast. As for the others, dunno is common in many dialects; I've never heard kinna before (except as an alteration of cannot), so it's probably local; lie-barry is a fairly common minority (mis)pronunciation, especially in urban accents; and both skoo and jewry are an effect of articulating [ l ] as [ w ], which happens largely word-finally or after [ u ], also mostly in urban accents.