Spanish phrase
Ni de broma.
Meaning
No way.
When to use it
Strong refusal used to reject proposals even jokingly. Informal and blunt; used to refuse favors or offers that are unacceptable, often among friends.
Example dialogue
Ni de broma voy a trabajar gratis.
No way am I going to work for free.
Pero es solo una vez y te conviene para el currículo.
But it's just once and it will look good on your resume.