Has anyone else had the misfortune?
No, but I have seen Scorpion Thunderbolt 'starring' Richard Harrison - a very strong challenger for THE worst actioner ever. It is on the cusp of being so bad that it is just bad.
I have seen Bog, but it faded quickly from my memory--like some distant aunt's boring slide show of her flower garden, or Octaman. The good people (?) at Stomp Tokyo, however, seem to have the pain etched forever in their minds--http://www.stomptokyo.com/badmoviereport/bog.html
Sorry but sanata claus conquers the martians is the worst film ever.