MST3K 202: The Sidehackers

"The Sidehackers" opens what might be called the "biker trilogy" of the second season of Mystery Science Theater 3000. It's specifically pointed out by the mad scientists that the movie is "not a science fiction film"; at this point in the series, they still seemed to be observing such niceties. In some ways, though, this episode seems infamous in part through something that isn't quite explained on-screen itself, but can be found in the official episode guide...
( 'Help, I'm sidehacking and I can't get up.' )