Worst double feature you ever saw in a theater or drive-in Please read OP)

In 1984, I saw Cloak & Dagger followed by Red Dawn at a drive-in: a kiddie version of a kid fighting the Cold War followed by an adult version of kids fighting the Cold War.

Most of the double features I saw were appropriate for each other. But when my parents took me to see Meatballs followed by Heaven can Wait, I lost interest in the latter and turned around and watched Alien without sound. That movie is quite scary, even without sound.