Dr. Otto and the Riddle of the Gloom Beam

Dr. Otto and the Riddle of the Gloom Beam is a 1986 science fiction comedy film starring Jim Varney. It was written and directed by John R. Cherry III. It is the first film to feature the Ernest P. Worrell character. However it takes a slightly darker tone than his future films. The film was released on video in 1992 by GoodTimes Home Video. It was shot in Fall Creek Falls State Park, Boxwell Scout Reservation, and Nashville, Tennessee.

Soon Lance and his assistant Doris drive by Dr Ottos lair when they have car trouble, caused by Dr. Ottos gloom beam. They set off to find a phone to call for a mechanic. They eventually wander into a day care, run by Dr. Otto, which trains the kids to be soldiers. After a few adventures they finally find Ottos lair and have a fight with the doctor. The lair explodes and it all appears to be over, though Dr. Otto apparently escaped. Lance and his friends push the car to a gas station, where the owner turns out to be Dr. Otto, disguised as Ernest P. Worrell. Lance asks for gas, but Dr. Otto replies they didnt have any. Lance and gang push the car off screen and Dr. Otto lifts his hat to reveal a hand on top of his head and yells Have a good day, knowwhatimean

Source: Wikipedia