Get out of your bedroom!

[Scarpelt]

Squish the worm through the Door hole (The place where a key goes).
Or let the worm unlock the door for you. 

[Ad Bot]

[Chrono]

Go back up into your room and unlock the box with the WIGGLY WORM.

[Cheemo]

Go inside your pockets, there you will find eternal peace.

[LaCuckooRacha]

Vomit up your eaten arm, use the key to wind the flesh into a roll to weld your arm back on.  You then reach into your ear, finding the magic earwax, you spread that on the key and unlock the new box in the secret room.  If you manage to open the box, do a backflip with joy and break your newly reattached arm off.

[Scarpelt]

Tell WRIGGLY WORM to shut down your stomach and liver.
The swallow WRIGGLY WORM.

[A.R.C.]

Mate with the worm.

[Ryuu]

Mate with the worm.

[A.R.C.]

Get on steam Ryuu :(

[Kapturrith]

Retrieve new arm from chest.
Homestuck reference

[Menen]

Look under the bed, checking for GAY NINJAS.

[Scarpelt]

Look under the bed, checking for GAY NINJAS.

He already SAID there are no Gay Ninjas

[TMAN7676]

Use the gun that you use for hunting with that you have had in your pants the whole, and shoot the door, and if that doesn't work, fire at the box, and if that doesn't work, commit Self Delete, or homicide

[Klayboxx]

You open the CHEST with the WRIGGLY WORM.

You get SPARE ARM.

[Christopher P.]

Stick SPARE ARM in your nose.

[Scarpelt]

Hit yourself with SPARE ARM Until you die.