So bad the jokes will almost write themselves!

Gawds, I saw this in the summer in a theater of all things. I was 6 or 7. I remember my father was the one who told the teenager at the door to let us in. I was traumatized for months afterwards by this utterly lame thing. Shot in LA, attempts at arty transitions, heavy handed environmentalist message, cinder block furniture, cheesy rubber costume and effects, ****** 70's people - all the hallmarks of a Riffably great movie and would be a balm to my trauma.

This is definitely riff worthy, I mean at one point they take time away from the main portion of the film to show the audience a turtle race!

Did you mean Spawn of the Slithis (1978)? Haven't seen it or heard about it. But it looks riffably terrible. So... pretty please with slimy sugar on top? Please riff.
https://www.imdb.com/title/tt0078277/reference

I don't know if you guys have been able to do this movie but it is a must!

I just saw this (for the second time!!!) at the New Beverly Cinema in Los Angeles and have to concur. The lead is a Bert Convy/David Groh '70's guy who lives in an all-earth-tone apartment with his girlfriend, his scientist buddy is named "Dr. John," there's a wino who staggers as ineptly as Torgo, a black sailboat owner who refuses to wear a shirt, another scientist with a badly mutated face who pops out of the movie as quicky as he's introduced, and late actor/comedian Hy Pyke — who was in everything from BLADE RUNNER to DOLEMITE — overacting into the stratosphere as a police captain with a bizarre mustache and clown hair. Scenes move at a glacial pace, with the editor cutting in too early and out too late— we get way too much of a disco-pants-wearing lothario seducing an 18-year-old from North Dakota on his sailboat in Marinia del Rey. The rubbery monster lumbers about so slowly we can't believe it could catch anyone. Also? Turtle racing at Brennan's in Venice— which is still there! Gore, as said before, is minimal; there's more cheap wine spilled by the drunks here than blood. One boob exposed in the sailboat attack, but that's it. PLEASE RIFF SLITHIS.

To echo an earlier request, I have to make a pitch for Slithis, a 1970's lowest of low budget attempts to recreate a kin-of/sort-of revival of The Creature from the Black Lagoon-ish films. Here are my three reasons why this needs a darn good riffing:

1. The movie manages to make sunny Venice, California look like a post-apoacalyptic wasteland.

2. The character list is comprised mostly of winos, stoned-out hippies, hipster disco-style fashionistas, and the most inept scientists imaginable.

3) There are so many lingering shots of the creature just standing and waving its arms that it would make for wonderful riffs from the creature's point of view.

Plus, the so-called "gore" in the film is nothing more than catsup spread across people, so it isn't too graphic to make this inappropriate for a younger (or more squeamish) audience. Gotta think of demographics, eh?

Here is the original film trailer... which deserves a riffing all its own:

https://www.youtube.com/watch?v=o7DTg4sDGYA

Crummy monster flick from the 70's deserves a good riffing.