A-fucking-men. It especially annoys me when the lane that's ending is one that's closed for construction, so the other lane is back up, and instead of getting in when they can people have to wait until right where it closes and cut their way in. Fuckers.
I don't let those people in. If can tell they are lost as fuck..and didn't know about the merge, then i let em in. But if they are trying to beat traffic...HELL NO!
I try to park close to them and door ding them on purpose. I have a small shitty car, so i can squeeze in, i don't care if they ding me back.