Checking to see if it's fake

Yeah I mean it's not as if they're required to do that or as if they did that to every bill.

*checking to see if it's a title*

Casinos do that at the tables with a little black light thing and all the regulars (including me) always say something along the lines of "I got those from here so if any are bad it's on y'all" and everyone half ass laughs cause they've heard it 40k times.