Answer:
What you do to determine the length of something
What fastens two people yet touches only one?
Never ahead, ever behind, yet flying swiftly pastΝΎ For a child I last forever, for adults I'm gone too fast.
I'm a small ring shaped fried cake, often with bavarian cream or fruit filling, and sometimes covered in icing and sprinkles.
I'm the son of water but when I return to water I die. Who am I?
Why was the cook arrested?