no kidding

US /noʊ ˈkɪd.ɪŋ/
UK /noʊ ˈkɪd.ɪŋ/
"no kidding" picture
1.

sem brincadeira, sério

used to emphasize that what one is saying is true or to express surprise or agreement

:
I saw a UFO last night. No kidding!
Eu vi um OVNI ontem à noite. Sem brincadeira!
He actually finished the entire marathon. No kidding!
Ele realmente terminou a maratona inteira. Sem brincadeira!