人ひとの分ぶんまで食たべるなんてずうずうしいよ。

hito no bun made taberu nante zuuzuushii yo.

Eating even my share too — that's pretty shameless. casual

あの人ひとは本当ほんとうにずうずうしい態度たいどを取とります。

ano hito wa hontou ni zuuzuushii taido o torimasu.

That person really acts with a brazen attitude. neutral