No, it is not OK to gang bang your sister. Typically this is the case because engaging in intercourse with a relative is illegal in many locations.
All of the alternate spellings seem to be okay. Or OK. The spelling of the word is not the only thing that there are questions about. The etymology is also still somewhat in question. A favorite...
I know that Tombstone was filmed at the old tuscon studios and I think that the OK Corral was filmed there as well
around 50 minutes.
148.57 kilometres (92.32 miles)