Sometimes we may think we know the answer, but your just unsure of it and when someone answers the question and gets it righ...t you could be like "H-hey! I thought of it first!" but it's the voice, not the thought that counts this time :O
Has a sitution like this happen to you before?
It has happened to me couple of times. Where I thought of the answer but because I am 50% sure and 50% unsure it doesn't make me feel like it could be right. And when someone else answers it correctly I was like "I knew it" xD