Pet Peeve

I have many...but here's one I just encountered for the 1,899th time.

You're driving along, minding your own business, when you see the person next to you frantically trying to get into your lane. Do you:
A. Speed up so he can't get in front of you
B. Look the other way and pretend not to notice
C. Tap on your brakes and give him a wave so that he can enter the lane

A and B are enticing and I admit to having used them from time to time. Normally though, I'm an option C driver. Now this is where my pet peeve comes in. NO THANKS WHATSOEVER! No friendly wave, salute, honk, wink, head bob or anything. I could have easily chosen A or B, Mister/Ma'am! Doesn't it make you want to "accidentally" ram them?!