You are chewing some gum and all of a sudden..the gum gets a life of its own and jumps from your mouth! This is especially bad if you are talking to someone when it happens.
How about this one? Running right into a door that is closed, like one of those glass sliding doors. You would be surprised how often this happens. It could leave you with a sore nose too!
This one is silly but it happens! You re-send one of those silly chain-mails because you are so afraid that if you don't, something horrible will happen to you.
And finally, at 8am in your first class of the day, you feel really sleepy and you accidentally fall fast asleep in class. The teacher never likes that one much, especially if you snore.
How many of these have happened to you?
