A skateboarder catches air over a dumpster as one friend observes and the other friend jests .
It is probably the case that the skateboarder 's friend is shouting `` Do n't fall in ! ''
It is improbable that the skateboarder 's friend is shouting `` Do n't fall in ! ''
It is probably the case that the skateboarder 's friend is shouting `` Do n't fall in ! ''
The skateboarder 's friend is shouting `` Do n't fall in ! ''