Search:

So...
"Do not pick your nose, you will scratch your brains"?

Yep that's the one I saw xD i tried finding that one but I found a different one instead and thought it was the same phrase :3 sorry.

"Не ковыряй в носу, мозги поцарапаешь!"

Umm "Do not pick...

Hi ^-^/

I've heard and seen this phrase a few times

"Береги свою голову, там мозги"

I tried to translate it by myself, and I got
"Take care of your head, brains are there"

Then i tried...