migi mo hidari mo wakaranai
don’t understand right or left
don’t know anything, esp. in a new place/environment
It’s often used to describe yourself when you’re a complete stranger to a new place or unfamiliar with things in a new environment. This phrase is often used to show one’s gratitude, as in the example below.
When I just joined the company and didn’t know anything, I was taught a lot of stuff by my senpai and that was very helpful.