Could be anything really. Mine is when I was delivering to a house where I pull up and instantly notice the big living room window was bulging outward. Like the glass was pulsating and it caught my eye because the reflection was moving.

Wasn’t a subwoofer cause I didn’t hear any music. What the hell? Well I walk past the living room to get to the front door and I hear kind of a rhythmic sound…bump,bump,bump.

I glance in there and this dude is nailing his wife big time. I mean he’s like 3 feet away from the window just going to town facing the window. I hold the package up and shrug ????

He doesn’t even flinch. Just kind of glances at me and smirks a little. I was like got damn dude…maybe use the blinds next time. I did take a pic of them for delivery confirmation instead of the package. Just so they can see what they are looking like to the whole world.