should the title still have been 'lethal weapon'?
in the 1st one, roger says about riggs: 'maybe we should register you as a lethal weapon!!!'
the key word there is maybe.
so riggs wasn't registered yet; and in this one, there was no indication a lethal weapon registration has been granted or even applied for---thus the title doesn't really make sense. not that i'm knocking roger or anything, if the california lethal weapon registrars office is anything like the california dmv...well, i'm sure the process is quite long & very frustrating.
Where there's smoke, there's barbecue!