Ninja rocks are broken shards of spark plugs formed by smashing the ceramic portion of the spark plug with a hammer or other large object.ince they can quickly and quietly fracture the glass side windows on most cars, ninja rocks have been used in  smash-and-grab  auto burglaries since at least 1995 (at least by Slovenian car burglers).
What is recurrent bacterial vaginosis? Recurrent bacterial vaginosis is an imbalance of the vaginal bacteria normally present in the vagina. Bacterial vaginosis is a common condition and treatment is available; however, in some women the condition may recur or even become chronic, requiring multiple and sometimes long-term treatments.
Recurring infection: Recurring infection is a condition in which there are repeated episodes of infection. See detailed information below for a list of 25 causes of Recurring infection, Symptom Checker, including diseases and drug side effect causes. Â» Review Causes of Recurring infection: Causes | Symptom Checker Â».