How bad is it? Fails as comedy, intentionally inept.
Should you see it? No. It can be a chore to sit through, though it has its moments.
Two bungling privates in the army come upon a cave that has giant women (named Poona and Tanga!) from outer space who are raising an army of vegetable men in pots. It's meant to be a zany comedy, but the intentional laughs never work. There are some unintentional laughs, but not enough to counteract the forced weird voices, the truly horrid native American stereotype and technical failings. This is one of two films directed by actor Bruno Ve Sota; the other one's also bad. The one thing the film has going for it is the women - I had to check; they're both about 5'8" in real life, so the forced perspective shots work quite well.