The film takes place the day after the events in Porky's. In the original film, both Mickey and Tim were roughed up late in the film. Both can be seen with cuts and bandages on their faces. In Mickey's case, he is also seen limping and with crutches. All wounds have disappeared the next day.
At least two different snakes are used when the boys want to scare Ms. Balbricker. The snake that Tommy pulls out of the box in the locker room is brownish in color, while the snake that they put into the sewer pipe is a much lighter, yellowish color. Then it returns to the brown color when it escapes into the gym.