Ex and I heard neighbors going at it (younger couple around our age). Their bedroom against our bedroom - layouts are mirrored.
We laughed really hard about it at first. Then it got really annoying. So we basically started making all the sex noises at the same time they did. After about couple months of doing the noises to them, I ran into the neighbor getting mail and we both cracked up hard. Came to find out they had heard us having sex first and started making noises. Which we thought was them having sex so for the past few months the 4 of us were literally laying in bed making sex noises at each other through the walls..
