나 사실 샤이니도 실제로 봤는데ㅋ -> I actually '샤이니' actually saw. In this sentence, '샤이니' is 'SHINee' who men's group of Korea. and, '실제로' mean, saw them directly without going through the Internet or TV. for example, saw at concerts, etc. and, 'ㅋ'mean, just, smiling expression at sentence, like 'k'