Yawning
There are just some days where you just yawn all day...at least I always do. I am just very tired lately and I have been yawning and it can be quite embarrassing in my opinion to yawn when you are talking to someone or if you are on the phone with someone. You don't want to be rude and yawn but sometimes you just can not control it and you have to yawn. And it is the worst when you "catch" a yawn.
