Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: So, for background information, me and my friend are both Juniors in highschool(17 y/o). We live in an upper middle class area in the US and most of the kids around here get there parents old cars or get brand new ones however, my friend and i both bought our cars with our own money. Mine is a way crappier model (2006 Chevy Cobalt) than his but has 80k miles less miles and while i like that my car gets me where i need to be he is obsessed with his Infinity. This led to me pranking his car occasionally, leaving boxes on it and stuff, just as a little prank. Well that all led up to today...

Friend-F Helper-H

So yesterday H and I decided that since it is our last day before spring break we were gonna do something hilarious to F's car, we were gonna sticky note half of it. After about an hour or so H and I finished and we thought it looked great and it was an amazing prank, there would be no damage to his car and if the sticky notes left any residue I left a message on one of them that we'd give him 15 bucks for a car wash. F woild get out of school 4 hours later than H and I so we left and waited anxiously to get his reaction over text.

When F saw his car I got a very different reaction than expected, F wasnt upset at all. All F texted was "Very Funny." While suprised, I just thought maybe F actually thought it was funny and moved along. I was wrong.

The next day i go out and find my car with duct tape all over it, courtesy of F. I brought my parents outside to look at it and they were appalled. As we removed the tape my paint job was ruined, there were missing spots everywhere and it was overall ruined. I texted F that he went way over the line and F responded that i had it coming and that it wasnt as bad as what H and I did. I sent him pictures of the ruined paint job and he said i shouldnt have messed with his car in the first place. I proceeded to call him and argued (not going to lie i was yelling at this point) that he needed to pay for a new paint job and after about a minute of listening he cut me off. F proceeded to say that no matter what i did i never thought i was wrong and was a Perfect little cunt. After that i told him not to talk to me again and that my family is deciding if we need to take legal action.

So this leads me to my question AITA for starting it?

pranking my Friend's car