Trivia: Parody singer Weird Al Yankovic had cameo appearances in all three of "The Naked Gun" movies, but in this one he was in an 'unrecognizable' role; namely as the thug who holds the Police Squad at gunpoint until Frank opens the door, inadvertently knocking him out.
Trivia: A few of the jokes featured in the movie (the scene when Frank, after falling through Habsburg's warehouse roof, first looks messy and, after smoothing his hair, is totally clean again; or the roof-top shootery with a goon less than two yards away, and always missing) were featured in the Naked Gun's prequel series, Police Squad. Frank's habit of treating every piece of cloth thrown into his face like a monster clinging on likewise originates from that series.
Trivia: Apparently, the bomb featured in this movie is the same as the one in 'Goldfinger', with a few alterations.
Trivia: In the jazz club, when the sad song is sung, the pictures seen on the wall are historically infamous disasters. The last picture seen is of Michael Dukakis. Later in the scene the disaster pictures change, but this seems to be a gag and does not qualify as a mistake, and we see a picture of a Ford Edsel as another example of a disaster.
Answer: The foot pedal controls the speed of the wheel. Frank puts his foot on top of Jane's foot and pushes the pedal down all the way. The rapid acceleration and the fact they took their hands off the clay caused it to go everywhere.
Bishop73
Wouldn't that hurt Jane as Frank's foot is applying pressure to hers while pressing down on the pedal?
Not really, you can see his foot gently presses on top of hers, and both their feet cause the pedal to slope towards the floor, which would decrease the amount of pressure Frank's foot applies to Jane's. On top of that, different people have different pain thresholds.
Phaneron ★
This is not exactly related to the question asked, but part of the scene that I could never really figure out. It showed that Jane made something in the shape of a square out of a piece of clay. What did she make and how could she have made it in only seconds with her eyes closed? I also don't quite understand how the clay could've possibly gotten to where she obtained it to begin with (asking in a way of abiding by the guidelines).
The scene cuts to them shaping clay without showing any of the set up. So we don't see how it got to that point, so she didn't do it in a second with her eyes closed. It's just a parody of the scene from "Ghost." In real life, using a clay wheel makes shaping clay faster, although it takes practice. If you put your hand, or a tool, on top and press down, you create a hole (which we aren't shown). It looks like Jane is just making a vase.
Bishop73
I really apologize, but I was referring to after the vase was inadvertently destroyed. It was after Frank apparently had a bodybuilder's physique (which was an obvious body double joke). Then it showed Jane making something out of clay in such a short time with her eyes closed. So sorry about that. Thank you for the reply.
The fact she made it so quickly was a gag, but she makes an ashtray. I would say the joke about that is people will often smoke after sex (or there's a perceived joke they do). It seems the clay comes off Frank's body, like it was there when the clay went everywhere.
Bishop73
Thank you very much. Yes, I never could get that part of the joke no matter how many times I have watched it. Thanks again for the help.