To me it was funny but only how I read it, but still sasaeng a are mean and you must protect kpop idols from them. 

Heechul's phone conversation with a Sasaeng fan

Fan:Opp…
Heechul:YAH!!!!
Fan:……yes?
Heechul:Do you know what time it is right now?!
Fan:3 a.m……
Heechul:Should I be asleep or not?!
Fan:You should…..
Heechul:So, will I be tired if I talk on the phone with you at this hour or not?!
Fan:You would……
Heechul:Then do you have to hang up the phone or not?!
Fan:I should……
Heechul:If you got it, then hang up. Call back in the morning ㅡㅡ