[TOMT][Movie][1990s?] Spy(?) movie where a sticker on a briefcase looks like a gun to the x-ray machine?

Maybe a spy/action/thriller type movie, probably from the 90s or early 2000s, and contemporary, not sci-fi. The protagonist is going through a security line, like at an airport, or maybe at a courthouse. He is trying to avoid attracting scrutiny to himself, or maybe is trying to sneak something through the x-ray machine or metal detector. As a distraction, he starts obnoxiously talking to the person in front of him in line and manages to slap a bumper-sticker like sticker or two onto the person's briefcase. Maybe the sticker was advertising the protagonist’s fake cover business or something like that, but it was innocuous text or images. Maybe like a tech company?

The person in front is obviously annoyed by the unwanted sticker but is also being hustled through the line to the x-ray machine and metal detector. When their briefcase goes through the x-ray, the sticker is designed so that on the x-ray machine it looks like a handgun (and maybe a couple of grenades?) are inside the briefcase. The briefcase owner gets swiftly tackled by security and the protagonist manages to slip through without being caught.