Top Definition
the awesome combination of wearing sweatpants and a sweatshirt, preferably on a rainy or snowy day... but every day is an acceptable day to wear a muffinsuit. llbean moccasins are often worn to complete the look. for males and females.
i don't get how some people get so dressed up for our 8am class. i just roll in like a boss wearing a muffinsuit.
by nosefacekillah October 04, 2011

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