Reverse Air Conditioner
One morning me and my friends reversed the fan on our friend's air conditioner and waited for it to get hot. As soon as it did, the air conditioner kicked on and sucked all the air out of the house. I guess they had a vent open because it started sucking stuff through like house plants and I think maybe their cat, and all that stuff got chopped up in the fan atop the air conditioner, and blew up in the air like confetti. A couple of their windows broke from the pressure vacuum. We ran away and never told anyone what we did, until now.