Several of Rick Springfield's band members play the band at the school dance early in the movie. Jack White is the drummer and was at one time married to Peg Bundy herself, Katey Sagal.
When Bubba is in the sauna in the girl's locker room, he watches a girl with long dark hair held back by a chrome barrette leave the shower with a blonde girl, go to her locker, and dry off to get dressed. When he turns and looks toward the shower, the same dark-haired girl can be seen in the shower again.
When the coach yells out "illegal use of the hands" to someone out on the dance floor, she gives the wrong corresponding hand signal. She makes the gesture for "holding" instead.