For some time, I've seen the trailer and it's be very hard to get on DVD (expensive) as well as VHS, however, I was lucky to get a VHS on Ebay. In any case, I think it's the perfect Riff not yet done...

Banana Monster is the one title, but it's also called Schlock...

About this caveman ape loose in current day and they're hunting for it... it's so bad it's funny even without the Riff, can't imagine it with the Riff...

The trailer is on Youtube... https://www.youtube.com/watch?v=oXf00SXBh8I