Gas on the treadmill :)

Now dont look at me like that. And dont tell me this hasnt happened to you.
So there you are running happily along thru around 6 miles of your 9 mile workout and then it hits you. A quiet rumbling that soon grows into a real need to let the rest of the world know what you had for lunch.
So what do you do
A) do you quietly dismount the treadmill and head to the nearest rest room or
B) Continue on and let yourself go quitely
and then do A) and B) apply when no one else is around
He he he he