The next time I'm in traffic, I start to notice my micro-complaining at various bad drivers and notice a trend. No labels, no specifics in the pejorative. In plain, if a Prius cuts me off, my mind says "Fucking NPR." Which is only ironic in that I drive a Prius and used to work for... If a car that takes too long to turn left in front of me has a BlackHawks sticker, it's "Goddamn Blackhawk fuckwad!" No label or obvious marker? It's just "Fucking asshole!" and we move on.
I'm pretty sure this isn't a specific phenomenon esoteric to me.