Como dizer "deu branco" em Inglês? [post inspirado no comercial da Open English]

If you're Brazilian, you must have watched a commercial of a very famous online English school in Latin America called Open English. During the commercial, we see a well-known brazilian comedian, Paulo Gustavo, doing an interview at the moment he's caught off guard by a question in English. As an attempt to avoid the question, he says he can't speak English by surprise and tries to mumble some words in English that make absolutely no sense.

What makes the commercial funny is that Paulo Gustavo tries to say the expression "my mind went blank" in a very confusing way. He does a direct translation from Portuguese to English that ends up in something like "I give the white color in my mind". As you see, that doesn't make any sense, right? For situations like that, when you cannot think of anything to say, the right expression is "my mind went blank". You can say that when you're asked a question you don't know the answer to or when you really want to remember something but for some reason you can't. During a test, for example, your mind can go blank several times. That's it for today guys. Take care!