那些关于蛋疼的日子那些关于蛋疼的青春
[nèi xiē guān yú dàn téng de rì zi nèi xiē guān yú dàn téng de qīng chūn]
'Egg-pain days' and 'egg-pain youth' are humorous or informal terms used in Mandarin Internet slang for trivial annoyances, boredom, or absurdity experienced during one's life or younger days. Here it suggests periods characterized by trivial worries or nonsensical issues typical to youth.