Top Definition
When you have an illness which makes you super fab!
"Oh, Mom! I can't go to school because I have Fabadabadosis!"

"Urmm, I won't be able to get to work today, I have a rare case of Fabadabadosis!"
#looking fab #fab illness #fabadabadosis #fab #illness
by Fab New Yorker March 16, 2013
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