Continuity mistake: When the armor truck driving thief starts to come to on the hood, he lifts his head straight up. But in the next shot his head is back down and tilted and he lifts it up again.
Continuity mistake: After the end credits roll there is a brief scene similar to the opening, with a building being blown up. Riggs and Murtaugh back out of the area just as the explosion starts and completely leave. There is a high angle shot and a police car appears where they just were. It wasn't there before.
Answer: So what does it mean? "Nothing, " says screenwriter Jeffrey Boam. "It's a complete non sequitur. The (original) line was something like 'Close doesn't count, ' or 'Close only counts with horseshoes.' Dick (director Richard Donner) is a fun-loving guy," says Boam, "and this thought just popped into his head. He said, 'Let's have her say something completely off the wall.'" Boam, who wasn't on the set at the time, quickly faxed Donner a dozen meaningless lines that began with the words, "Close is..." Then the whole cast and crew started coming up with them. But the one they used came from Russo herself. "This is like some line from a Beatles song," says Boam. "I guess people are trying to figure it out."