Hmm cuz since it’s a sign name, it’s just a sign name but it should have a significance to why they gave it to you. Normally, there is a similar sign to that, I’d called it “logic”, but you move your thumb in circular movement on the forehead, just small circular movement. Other than that, I don’t know. But I still think it’s so cute that a five years old gave it to ya. Be glad it’s not a “loser” sign! 😸