Haha.
One time me and 3 buddies took a day off school and decided to go to a luxury mall out about 45 minutes away. I was the only one with the driver's license at the time, so of course I had to drive.
Anyways, during this time I was going through a rough patch with my GF. I constantly had to have constant talks with her etc. (It was my fault, so I put up with it) So one of my friends decides to give me shit about it literally the entire car ride up to the mall. I mean constantly calling me a pussy, bitch, etc. I was about

ing kill him while driving 80 mph.
So we finally get to the mall, he gets out first and shuts the door. I quickly put it into reverse and take off. The moron grabs my spoiler and trys to hold on to my car (WTF?). It was pretty dumb now thinking back on it, but I launched my car when I saw him in the rear-view mirror holding on to my spoiler. He fell flat on his face on to the hard asphalt, then proceeds to wobble up and flick me off while screaming at me.
So I just said

it and took off. My other two friends and I went out and got a bite to eat. We came back two hours later and found him in the mall at the food court. We walked around a bit, he refused to talk to me, etc. So when we're about to leave he goes to the bathroom. The

er decides to shit in his soda cup to pull a "revenge" prank on me. (I didn't realize this at the time)
So he tells me to open the trunk so he can put his sweater back there. Stupidly, I don't think anything of it and didn't notice his cup gone. I smell something terrible after only a few minutes of leaving the mall. He starts laughing histerically. I pull over, open the trunk and notice his cup is full of shit. I grab his sweater AND his backpack, throw them on the ground, and then dump the entire cup of shit all over them both.
He gets out yelling, I get back in the car, lock the door, and take off. At least this time he didn't try to jump on my car again. He left his cell phone in the car, so I call his parents and tell them he can be picked up at the next-city-over mall for being a total asshole. At least I called his parents, albeit he got in trouble for skipping class.
Obviously, we are no longer friends. Btw, this was about 4 years ago.