Unlike when someone pulls your card (throws you under the bus), the El Paso Card is pulled when you are at the urinal in your office building, you fart, and then right away someone walks in and says hello to you using your name, thus announcing to those in the stalls it was you who just ripped one.
Mike is standing at the urinal and farts. Phil walks in and says, "Yo what's up Mike?!" Pat comes out of the stall, looks at Mike and says, "Damn Mike. Phil just pulled your El Paso Card."