There are some medical case studies that are so fantastical that it's pretty hard to believe that they aren't urban legends. Our favorite example is the Conception by Oral Sex, but this is a really close second.
Accidental condom inhalation. "A 27-year-old lady presented with persistent cough, sputum and fever for the preceding six months. In spite of trials with antibiotics and anti-tuberculosis treatment for the preceeding four months, her symptoms did not improve. A subsequent chest radiograph showed non-homogeneous collapse-consolidation of right upper lobe. Videobronchoscopy revealed an inverted bag like structure in right upper lobe bronchus and rigid bronchoscopic removal with biopsy forceps confirmed the presence of a condom. Detailed retrospective history also confirmed accidental inhalation of the condom during fellatio.”
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