Too many to list..
One time I was tossing my cell phone at the front window of our house and catching it as it bounced off, and my roommate told me to stop because I was going to break the window. I responded by throwing my phone at the window as hard as I could. Yes it broke the window and my phone.
I used to live in a house with a few buddies a few blocks from a local bar, so we would just walk there so we wouldnt have to drive home drunk, but probably did more stupid stuff walking home than if we had just drove. There was a large wooden carving of a bullfighter in this guys front yard on the way home, and we decided we needed to have it, so we tried to take it. It was like three or four of us spending close to thirty minutes pushing this thing trying to get it to move, but it wouldnt budge, which led to us eventually just punching and kicking it a bunch. It never budged, and we came back another time to try and get it again, and the next time when we were less drunk we realized it was carved out of a tree that used to stand there, and thats why we couldnt move it. It did have a hat that was carved out of another piece of wood and nailed on, we settled on stealing that. One of our last nights living in that house we got drunk and went and returned it though(This was probably 2 or 3 years after we originally took it).
Another night walking home we saw a big tv laying out on the sidewalk for the garbage truck to pick up the next morning. We wanted it, so we picked it up and started carrying it home, but decided it was too heavy so we decided to set it down, go home and come back with a truck. Less than a block after we put it down, a cop sees us walking and pulls up to us to ask us some questions, apparently there had been a bunch of recent burglaries in the area and he wanted to know what we were up to. Would have been fun trying to explain to him where we got the tv and why we were hauling it down the street at 2am if we hadnt set it down.