It reminds me of something.
Playing with 3 people and all the 3 of us where in the PaP room, and i upgraded my weapon and while waiting for my weapon i walked back and forward against the PaP machine and back again and again forward against the PaP machine, and all of the sudden we got Max Ammo..
Every1 was in the teleporter and we werrnt even teleported back yet to one of the rooms this OP is talking about, it was really weird.. But nice tough haha, after it i tried it a few more times and i never got Max Ammo again

..
And i will try and look for those teddy bears wich ure talking about and the dartboard..