earphone distance
The magical gap you have to keep between you and someone else so you can both use the same earphones without losing your mind.
I had to sit on the other end of the bench just to hear my music without her blabbing.
We had to be like 12 feet apart so we could both listen to the same song without screaming.
He had to move to the other side of the room just to hear his song without me talking over it.