The mechanical shark kept breaking down so Spielberg just hid it, and that accidentally made it terrifying.
Fun fact: The mechanical shark broke down so often that the crew nicknamed it Bruce after Spielberg's lawyer.
Every hen do since 1987 has been legally required to attempt that lift, usually with worse results.
Fun fact: Patrick Swayze called "nobody puts Baby in a corner" the cheesiest line he ever had to deliver.