Top Definition
an anorexic girl who looks like she tries to be a wannabe twiggy by eating 15 crackers a day, and she also has a voice similar to pikachu when she talks to her boyfriend.
"wow, would you look at that anorexic girl talking to her boyfriend with that awful pikachu voice? she needs to eat a double bacon cheeseburger and talk like a normal person! what a twigachu!"
by madonna_wannabe August 16, 2009
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