I used to play the word game all the time! We did exactly the same, start of with the obvious words then head steadily into the obscure...
One FS memory always brings a smile to my face. I was about 16 at the time and always used to try and work with my best friend who was the same age. We both hated FS but used to have a laugh to get through the time. We would always argue about whose turn it was to do the door.
Anyway, this one day I had officially gone on strike and pretty much refused any door where there seemed to be signs of life. I ever so quietly knocked on one door and to my surprise I heard some movement inside and realised someone was coming to the door. So I quickly shoved my WT and Awake into the hands of my friend. She wasn't having any of it so she she tried to shove them back to me. I stepped back and the mags landed on the floor. Next thing, this old lady appeared at the door and both my friend and I stood in total silence, each refusing to speak, with the two crumpled mags at our feet.
We all just stood there for what seemed like ages until the old lady asked what we wanted. More silence. Then eventually my friend said "er, sorry! I think we've got the wrong house, bye!" and we walked off leaving the mags still on the floor.
God knows what that woman must have thought!!