You might be an Ahole test.

I'm in the left lane and leaving a gap between me, the car in front of me and the line of cars in front of us. I can't go any faster and I'm passing cars on the right.
But the person on my *** moves right to pass me and you know he is going to take my gap when he passes me.
I speed up and prevent him from having a gap to take.
Maybe we all are aholes then.
No, you are maintaining proper lane usage protocol for the safety of all traffic on the road; passing on the right is for assholes, and they should sit in that lane and have their whiny, immature hissy-fit.