In case you're wondering, the titular "100 Mile Rule" is that if you're more than 100 miles away from home, you can do whatever you want (i.e. cheat on your wife) and it doesn't count. This funny-err-sorta setup quickly gives way to an odd blackmail scheme, as one of the girls our three businessmen encounter threatens to tell the wife about their dalliance. The schizophrenic flick is derivative, scattered, and awfully familiar. Even a strangely cast Michael McKean can't elevate it from the late-night cable fare it's destined to be.