Perfect Strangers (1986)

S3E8 Karate Kids

During a lively happy hour, Larry and Balki find themselves on the receiving end of a beating from a bully who had been making advances towards Jennifer. Determined to defend themselves, they enroll in karate classes. After weeks of intense training, Larry is eager to confront the bully at the bar once more, convinced that their newfound skills will help them stand their ground.