So many jokes to make... but now's not the time!
Reconcile your differences and concentrate on your escape. Ruby, open the beeping medical kit with the severed finger. Tom, remove the hair from the doorknob.
As unsettling as it is to realize each other's bizarre mutations, Ruby and Tom find a strange comfort in knowing they're both in this together now. If nothing else, they no longer have to fear each other, or hide secrets.