Feeling well, being comfortable (or not).
Pinyin adaptation of Chinese mandarin
"I don't feel shufu today, must be sick."
"It's Friday night, I'm having my booze, my friends to chat with and the sky is clear, I feel super shufu"
Comes from the Chinese Mandarin (putonghua) pinyin adaptation. Meaning: being busy.
I won't make it today, I'm really mang.