Top Definition
When nice fat people loose weight and turn skinny. Than become lying and back stabbing ex friends. This can be seen throughout high schools and universities. This disorder, that people are having after loosing the weight is a big problem and needs to be stopped. Ask anyone and they will know a brawnism person with this disorder just discribe it as a fat person that was nice but now that he/she is skinny they are not the person you remember.
Anna Nicole Smith when she lost the weight, she was very crazy and had some major problems that is Brawnism.
Another example for brawnism is Hilary Duff was also a good girl and after loosing some weight got to becoming a not so good person.
by Helene Hanff October 07, 2008
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