Guys prank each other, it happens. Sometimes it can be fun, unless everyone doesn't have a sense of humor. I'm a prankster, but if I find out it is unwelcomed, I stop. Otherwise, I expect to get pranked back...its the games we play. It gets really fun when everyone is drunk, and someone passes out
Not so long ago, a trash service showed up at my house with one of those huge ass dumpster thing. I was like, wtf? I knew who it was, my coworker ordered that shit. I put his jeep on craigslist for cheap, his phone blew up for a couple days.
We went back and forth on and off, for a long time. No one ever crossed the line, but we both screwed each other over a few times.
Now, if you aren't pranking him back, and dont want to take part in the games, that's a different story. You need to man the fuk up and tell him you aren't interested in his childish games. Let him know that if it continues, there will be consequences. ...and you need to follow through. I DGAF how big or small he is, one well placed punch to his jaw will let him know you aren't bullshittin. And if it is placed right, he'll have a few seconds in lala land to think about things. I don't condone starting fights, but if it was me, I'd knock his ass out and fuk his girlfriend.
I'm not sure if the guy is bullying you and you are taking it, or if he is just a little slow at getting the hint. Either way, you need to end it. Sometimes, in the real world, you have to use your fists. And no, the cops won't do anything to him for folding your mirrors or putting your windshield wipers up.