Deathstalker 1 & 2, although the second is far superior.
It's completely tone deaf by any standards, let alone modern ones. Watch as a gang rape is interrupted and turned into what can only be described as a "heroic sexual assault".
The second swaps out the main actor for a much funnier one, and has probably the catchiest out-of-place theme tune of any movie.
You know you're watching a terrible movie, but they breeze along and you can't help but be entertained by it.