どうかしているsomething wrong with (someone), not oneself, crazy, nuts

家族(かぞく)の葬式(そうしき)で笑(え)みを浮(う)かべるなんてどうかしている…。

Smiling at a family funeral... there's something wrong with that person... {something wrong with (someone), not oneself, crazy, nuts}

払(はら)えないほど高価(こうか)な買(か)い物(もの)をするなんてどうかしている。

Doing shopping that's so expensive you can't afford it, there's something wrong with you. {something wrong with (someone), not oneself, crazy, nuts}

パートナーに向(む)かって罵詈(ばり)雑言(ぞうごん)を浴(あ)びせるなんてどうかしている。

There must be something wrong with someone who hurls insults at their partner. {something wrong with (someone), not oneself, crazy, nuts}

三(さん)十(じゅっ)歳(さい)になってまで女性(じょせい)関係(かんけい)にだらしない男(おとこ)と付(つ)き合(あ)うなんてどうかしているぞ。

There must be something wrong with you if you're still dating men who can't handle their relationships with women, even when they're already thirty. {something wrong with (someone), not oneself, crazy, nuts}

叱(しか)られるなりその上司(じょうし)に向(む)かって暴言(ぼうげん)を吐(は)くなんて、あの社員(しゃいん)はどうかしている。

That employee must be crazy, he started cursing at his boss as soon as he was scolded. {something wrong with (someone), not oneself, crazy, nuts}