Why do some bulimic people actually hide their vomit in their room?

I've recently found this out. It's so strange and I'd like to understand why this happens.

Why do some bulimic people actually hide their vomit in their room?


Because they can't vomit anywhere else, and they forget to throw it away.
There's an actual desire to keep it there. (If so, why?)
Other - what?
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Why do some bulimic people actually hide their vomit in their room?
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