Darkening of the stools is actually caused by the nasty "health" food that is served in the hospital just up the road from the main gate. You are there because you have partaken of the feast that BEagle described BUT only almost made it back to the block. In a kokkinielli induced fug you view the fabled wadi-bears lurking just out of sight. In order to finally prove the theory that they exist you hurtle towards them; completely forgetting about the storm drains in your path. One leg in and over you go, much pain and howling later I guarentee you will be served the stool darkening mush by a fair lady in white.
Maybe a Pprune bash there to reaquaint ourselves with RAF tradition?