...about a guy who gets wrapped up in some sort of Government conspiracy [maybe Aliens related but that may be a false memory.]
Quite literally the only thing I remember about it is one scene where the main character puts out his index finger like a gun and pretends to shoot and it actually works as a gun/someone else is shooting for him. I seem to remember this takes place around a phone booth. Either he's surprised that it works or actually genuinely thinks he can shoot with his hands I can't remember...
It's been a long time since I've seen it, but I think this is Real Men (1987)
, with Jim Belushi and John Ritter. Nothing spectacular, but it had its moments.