(Nothing.)
It is not appropriate to call into work sick; when you are not in actuality sick.
Have you ever been at a loss for something to say? I have. It is a very awkward feeling. This blog will give you three or more things to say for almost any occasion. Read it in the morning with your coffee or at night before falling asleep and I guarantee you will begin to recall many of the suggestions. After time, appropriate things to say will come out naturally. Finally, people will look to YOU to say something, and you will! Goodbye awkwardness; hello popularity!