わけないじゃん

there's no way

→ 訳
phrase Rare #32,356
there's no way A casual, emphatic way to say that something is impossible or obviously not true. Often translated as “of course not” or “no way.” The ending じゃん adds an “obviously” or “you know” nuance.
JA: そんな大事なことを忘れるわけないじゃん。
EN: There's no way I'd forget something that important.

俺が知るわけないじゃん

How would I know?

トム気にするわけないじゃん

There's no way Tom would care.

喋るわけないじゃん

Of course I’m not going to talk.

— すずめの戸締まり (2022)

トム自分の車私に貸してくれるわけないじゃん

There’s no way Tom would lend me his car.

永遠のなんてあるわけないじゃん

There's no such thing as eternal love.