Top Definition
A fake or immaginary disease, usually to get out of work or for attention. Calling out someone who you know is faking it.
Mark: My tummy doesn't feel good and my head is hot. I think I am sick, I can't go to work today.
Tom:Bullshitinosis
Travis: Yes, Mark you have bullshitinosis, and IDS
by yoda321 November 06, 2009

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