Answer:
Cut the wrong wire and it goes boom
Proof you've done your time in school
Usually green but can be brown. It's a great place to play or lie down. What is it?
What occurs four times in every week, twice in every month, only once in a year but never in a day?
Sometimes imaginary and sometimes real, sometimes they are the closest and dearest person outside the family. Who are they?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.