Other mistake: In the scene where Terry is at the computer, and Jim Belushi's character surprises her while pretending to be a Sperry repairman, they keep turning the monitor on and off. But the last time you hear a beep, which is supposed to be Terry turning off the monitor, her hand is nowhere near where the button would be. They obviously added the sound effect later.
Jumping Jack Flash (1986)
1 other mistake
Directed by: Penny Marshall
Starring: Whoopi Goldberg, Jonathan Pryce, Carol Kane, John Wood, Stephen Collins
Continuity mistake: When Terri is at the party, her blonde wig changes shape and size many times.
Terry: Drag the river! There are killers running around the fucking city!
Detective: How would you like me to wash your mouth out with a wire brush?
Terry: How would you like if I kicked you in the nuts so hard they get lodged in your fucking nostrils?
Marty: My, that was a vivid image, wasn't it?