If you can, find a pair of scissors and a few paperclips.
Bend a 90 degree angle on the tip of one to the size of around 1/2 a cm, then bend a second so it looks like it's pointing outwards like a bar while parallel to the handle. This is your tension wrench, you constantly apply a small amount of tension to the lock so that when the tumblers align, it automatically opens without them getting pushed back.
Second, take a second one and bend a tiny 45 degree angle, this is your lockpick. Place it into the keyhole and look for tiny pins called tumblers, what you do is push each upwards and continue moving deeper into the lock with every one. with luck or if you made the tools correctly, the lock should break open and you can stab your friend in the eye with said tools.
If that doesn't work, tell me if you have a door key in there. (Doesn't have to be the one that opens the door)
also if the side of the door you are on has screws on the hinges, you can try using the coathanger to unscrew them and kick down the door.