cupside-down

Placing a cup upside-down with the open top, or the "cup side", downward, with the rim of the cup on the surface.

Dain, stack these paper cups cupside-down in the storeroom.

Cupside Down

When a cup lands on the ground with the top part touching the ground.

Mike " It landed cupside down.."
Matt "..."
Mike "Haha, do you get it?"
Matt "..."