2.     man
       ---------       = man overboard
        board

3.      stand
       ----------      = I understand
            I

4.     /r/e/a/d/i/n/g/    = reading between the lines

5.          r
           road           = cross road
             a
             d

7.            cycle
               cycle      = tricycle
               cycle

8.             t
                o          = downtown
                w
                n

9.             le /
               / vel        = split level
                  /

12.          ii ii
          --------           = circles under the eyes
              O O

13.      dice dice         = paradise

14.          t
              o
              u                = touchdown
              c
              h

15.       ground
          -----------
             feet
             feet              = six feet underground
             feet
             feet
             feet
             feet

16.        mind
         ---------              = mind over matter
           matter

17.       he's / himself    = he's beside himself

18.       ecnalg                = backward glance