SPASMS (1982)
Directed by William Fruet
Starring Peter Fonda and Oliver Reed
Justly forgotten movie has Reed as a big-game hunter with a psychic link to an African serpent-god!
The coolest scene in the movie has a guy's face puffing out after being bitten by the supernatural serpent, which escaped after being transported to a Canadian college town. The effects were by Dick Smith.
Overall, though, the pic is pretty silly.