are any people out there good at riddles?

Well, the reason I asked was, I found a riddle that I cannot find the answer to…

Could someone help me with that?

Yeah, so theres this guy, and everynight at exactly 12 at night, he calls for the exact time,- You suck, the end!

Piece of Cake. Nightmare.

Night for darkness, Mare for being a horse.

For the next riddle:

send boy and sister, then return boy, then send mother and grandmother, then return sister, then send boy and sister, for a total of 17 minutes. Don’t forget how the answer should be written in the address line and that letters must be in alphabetical order.

thanks… I really appreciate the help.