colloquial exclamation expressing surprise, confusion, or dismay ("What is this?/What the...?")
何これ、味が変だよ。腐ってるのかな？
What is this? The taste is weird. Is it spoiled?
スマホを開いたら画面が全部真っ白で、何コレ！？
I opened my phone and the screen was completely white — what the!?
彼のファッションを見て、みんなで『何これ』って笑った。
We all laughed and said "what is that?" when we saw his outfit.