I love Wacko, used to be on late night TV a lot growing up, I already have the American Blu, but glad it's being released.
It's very Airplane in style, as in throw as many gags in as they can even if some don't work.
It's basically a riff on Halloween and slasher films with the Pumpkin headed Lawnmower killer, but there are references to most of the late 70's horror films, like Omen, Alien and even throws in stuff about Dr Moreau.
As the killer says - "Death to teenagers who f**k!"
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MIKE: I've got it! Peter Cushing! We've got to drive a stake through his heart!
VYVYAN: Great! I'll get the car!
NEIL: I'll get a cushion.