Merged into stop and go traffic on Bangerter Highway. Most cars stop and try to immediately merge over. I head up to the merge point; one guy starts to drift in my lane, not sure if it was an intentional message on his part. Another dork in a Civic wouldn't let me merge in front of him, yelled at me and flipped me off. Younger Venkman would've probably flipped him off and we'd get into some thing, but middle-aged me just laughed, rolled down my window and yelled "zipper merge, look it up!" Another bird and 'eff you' from him and we went on our way. I've never understood the rage that simply comes from merging or even changing lanes in front of someone.