Also known as: パンツ下ろし, パンツめくり, パンツずらし, 下ろしパンツ, パンツ脱ぎ, 内裤下拉
Panties pulled down from the natural waist position, but not totally removed.
The panties do not need to be actively being pulled down. They just need to be lower than their normal position.
Not to be confused with the panties being tugged, pulled, or lifted up by the straps (a Panty Tug or Panty Lift).