쏠쏠하다 is used when something is very interesting, profitable, or satisfying in other ways. A similar expression in English would be "juicy" or "finger-licking good" when referring to a story or something similar.
- 이 가게에서 나오는 수입이 쏠쏠해 = I am drawing juicy profits from this store.
- 드라마 보는 재미가 쏠쏠해 = I am really enjoying myself watching dramas.
- 처음엔 울 혜진이 차해준 얘기하면 반응 재밌어서 놀리는 재미가 쏠쏠했는데...이제 뭐를 놀리나~
= Before, I had such a kick out of watching 혜진's reaction by teasing her with stories about 차해준. But now I need to find a new thing to tease her with.