Watch the little feet in the credits!! There's one bit of the Map marked as 'Stink Bomb Store Room'. One set of footprints approaches it and TWO sets dash out the other side! That has GOT to be the twins!!!
And there is one very small room (probably a closet!) that has two sets of feet in... well, looks to me like there was some snogging going on there!
Awesome. Just awsome.
Can't wait to see it again!