This puzzle is called Lateral Thinking . . Its like the thing that mr wu do with us during pae. Yeah some of them are similiar. Still, its worth a look

1. man
------------
board



Ans. = man overboard


2. stand
------------
i



Ans. = I understand






3. /r/e/a/d/i/n/g/




Ans. = reading between the lines





4. r
road
a
d



Ans. = cross road



5. cycle
cycle
cycle




Ans. = tricycle




6. 0
------------
M.D.
Ph.D.



Ans. = two degrees below zero




7. knee
------------
light




Ans. = neon light
( knee - on - light )




8. ground
---------------
feet feet feet feet feet feet




Ans. = six feet underground





9. he's X himself






Ans = he's by himself




10. ecnalg




Ans. = backward glance





11. death .. life





Ans. = life after death




12. THINK




Ans. = think big ! !




13. ababaaabbbbaaaabbbbababaabbaaabbbb...





Ans. = long time no 'C'
>( see )