デカ尻じり

noun

big butt; large ass

Colloquial, often used in casual or slangy contexts to describe someone with large buttocks.

• あの子こはデカ尻じりで有ゆう名めいだ。

  That girl is famous for her big butt.

• デカ尻じりがコンプレックスだったけど、今いまは気きに入いってる。

  I used to be self-conscious about my big butt, but now I like it.