Saw someone hanging

I dropped my boyfriend off at his house around 11:00 at night and started driving down the road, I was going fairly slow because the speed limit was 15 mph and about a minute after leaving his house i see a house with one car parked in the driveway and a bedroom light turned on. Behind the window it looked like a figure of someone standing or hanging there and i thought it was probably a halloween prank but then realized it’s december. it really did look like someone was hanging there as their hands were still next to their body and legs hanging down. I couldn’t see their feet but i did stop infront of the house for a bout a minute and the figure did not move. What do you think it is?