Bottoms Up

Bottoms Up (1974) is a comedy directed by Franz Josef Gottlieb rated 3.9/10.

A scientist discovers a way to turn cow manure into energy. Two secret agents are dispatched to find out the formula but they devote more time to having sex with each other than they do going after the scientist. Pretty soon everyone in the area is after the scientist but they also wind up spending more time having sex with each other.