Friday the 13th Part 2 (1981)

Not wanting to waver too far from the formula that made it a success, there are few changes made to the original plot. Instead, there is more of an effort put into making the kills more creative (in light of the MPAA's increased crackdown on censorship) and establishing strange, archetypal characters who are quickly dispatched. Despite the redundancies, there is a "campiness" to these movies which make them rather enjoyable if you're in the right kind of mood.

This is more likely the film you're thinking of when you think of Friday the 13th. 

2½ burlap sacks out of 5