best thing to do in my humble opinion is to ALWAYS eat lots of laxatives in the mornings and also invest in a pair of trousers/shorts with a large opening in the back (you can probably get them from gay bondage shops)
Then if this situation happens, all you need to do is catch up and get in from of them, then squeeze every last morsel of runny shite out of your arse and cackle manically as they get covered in your breakfast at 20 mph.
You're weird, dude...