Also known as: ももぷく, 食い込み, ハミ肉, 勒肉, skindentation, Skindentation
Portmanteau of "skin indentation".
When clothes are so tight they indent into the skin and make the surrounding flesh bulge outwards. For example, tight Thighhighs that cause the thighs to bulge over the top.
See Deep Skin for when skindentation is caused by groping instead of clothing.
See Imprinted Skin for the marks on skin caused by skindentation.