何なにが何なにやらわからない

expression, i-adjective

not knowing what's what; unable to make heads or tails

Expresses total confusion about a situation; the speaker cannot grasp what is happening or what things mean. Often used when overwhelmed by information or chaos.

See also: 何が何だかわからない (なにがなんだかわからない)

• 説せつ明めいが複ふく雑ざつすぎて、何なにが何なにやらわからない。

  The explanation is too complicated; I can't make heads or tails of it.

• 初はじめての海かい外がい旅りょ行こうで、空くう港こうに着ついたときは何なにが何なにやらわからなかった。

  On my first trip abroad, when I arrived at the airport I didn't know what was what.