When you and the person you're dating decide you're going to move in together, and you decide to move into one persons existing apartment because they have more stuff than you, and it's so much easier for the person with less stuff to move in.

If a person with a lot of stuff moves in, it's a big deal, it's noisy, it can be a real hard move-in. But if the person with less stuff moves in to the place where all the stuff is already, it's not a huge ordeal, it's quiet, no one needs a u-haul, therefore it's a soft move-in.

All the benefits of living together with as little hardship of moving.

When you eat dirt for the first time and leave your family to build a shack in the woods