What is 제목학원?

What does 뻥이지롱 mean? What does 뻥이지롱 mean? Is it a slang word?

What does 인생작품 mean? I saw this hashtag #인생작품 on instagram often. I know 인생 is life and 작품 is work What does it mean and what situation we should use this word Thanks

What does 총총 mean? What does 총총 mean?

한학년 What does it mean? I'm trying to find the meaning of 한학년 buy I can't found any. Thank you.