NEM QUE A VACA TUSSA!
[No way! Never!]
Eu não empresto meu carro para ninguém, nem que a vaca tussa!
I don’t lend my car to anybody, no way!
TIPS & NOTES
The word tussa is the subjunctive form of the verb tossir – to cough (noun – uma tosse – a cough). Another very common expression with the same meaning is Nem a pau!.
Eu não consigo entrar nem a pau no chat!
I can’t get into the chat room no way!

