I vote orgy, but it would be fun to stage a fake fight and fight about our creepy neighbors and all the things that they have said. We could argue about what we should do to their house once they leave and then get really quite and just wait to see what happens
The last house I lived in, a few blocks away here in the vast hinterlands of Cosmopolis, we had neighbors across the street who did the exact same thing--left a chink open in the blinds, even, and the "man of the house" even had his favorite armchair set so he could look across the street right into our living room windows.
One of my kids had a little band going that would practice in the garage. Usually in the afternoon, never too late into the evening even on weekends, and yeah, they were loud--live drums will leak into the street no matter how many rugs and quilts and sheets of foam you hang on the walls.
Twice, Creepy Neighbor called the cops when the kids were practicing. Both times, my girlfriend and I weren't home. Note that he never called us first or said anything, or even called the cops when we were home. It was like he was trying to get the cops to catch the kids doing something wrong when we weren't around.
The line of sight from his window, through our living room, went right into our master bedroom door. So I started getting dressed and undressed in the bedroom, well inside the doorway so the only line of sight was to his window and not the street, and mooning the bastard every time I saw him over there watching. Three views of my enormous, pasty-white ass were enough to close the chink in the blinds. Personally I hope the image is burned into his corneas forever.