Bad Taste is a 1987 New Zealand science-fiction action comedy horror film directed, produced and filmed by Peter Jackson, who also starred in it and co-wrote the screenplay, along with Tony Hiles and Ken Hammon. Independently produced on a low budget, it is Jackson's first feature film. Jackson and friends take on most of the key roles, both on and off-screen. The plotline sees aliens invade the fictional New Zealand village of Kaihoro to harvest humans for their intergalactic fast food franchise, where they face off against a four-man paramilitary force.
https://en.wikipedia.org/wiki/Bad_Taste
In my top 3 most gore movies of all time.
It is a fun one too. On that top 3 Peter Jackson actually made two if them :-).