Why would you give a crap about someone wanting to pass you? Having them tailgate you, stopping them from passing, etc, puts you at far higher risk of a crash or worse than if you let them pass you? I just returned from a 2,500 mile road trip from the Midwest to the Gulf Coast and back to visit a dying friend before it was too late. Some of the roads that I was on have speed limits of 75 mph, with most traffic going 85 or 90 mph safely. But every once in awhile there is some jerk who thought that he was going to teach the rest of us some type of lesson, or maybe he was totally oblivious to what drivers around him were doing, that he would sit in the left lane right at 75 or possibly a bit slower. This forced everyone else to pass him on the right, and in a few cases, swerve back into the left lane directly in front of the slow driver.
If you want to drive slower than the traffic around you, stay to the right, or if on a two lane road, pull over where you can, let the faster drivers go by, then resume your slow travel. Don't be the a**hole that thinks he is teaching the rest of the world how to drive and end up creating an unsafe situation for all involved, or inviting real road rage.