A person being in a fragile state, transient or permanent, that is marked by extreme emotional sensitivity, an unreasonable expectation of extra-special treatment (see prima donna) and remarkably low self-esteem.
I invited Susan out with us, but since my ex-girlfriend will be at the show, she’s being a fucking glass ballerina and won’t come.

Ever since I got her the wrong sized underwear for her birthday, she’s being a glass ballerina and says I think she’s fat.
by EtherPimp April 9, 2007
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