Hole surrounded by the wall? My friends were horseplaying surrounded by my room, and they busted a...

My friends were horseplaying surrounded by my room, and they busted a circular 2-inch in diameter hole within the wall.

I haven't told my parents.

A) How do I go nearly telling my parents?
and
B) How can I fix the wall?

Help would be appreciated! Thank you within advance!
Answers:    Cut the hole into a square. Be sure not to hit any electrical wires. Cut a piece of wood matching width but 3 inches longer than the square hole. Insert a screw into the center of the wood(acting as a handle). Slide the wood into the hole and center it(while holding the screw). Put another screw into the drywall lately below the hole so it catches the unknown piece of wood, then put a screw over the top so to lock in the top of the wood. Now cut a piece of Sheetrock slightly smaller than the square hole, and screw it into the piece of wood that is very soon installed. Apply plaster to the seams and apply unified tape. Apply 2 more coats of plaster, sand in between. When finished smooth, paint.

Next time be more thrifty. Take responsibility for your mistake, and fix it by yourself or with some help out. It's not a big fix, but hiding it will make it worse when it's found.
cover it up near a poster if it is high up or engineer your own later when they are not home achieve some plaster and patch it up. or jus tleave the poster