Reasons why I sometimes hate being me #1

When I get tired I begin to adopt a certain tone that has a way of not coming across quite so sincere even when I mean it to be. Even a thing as " How are you? " and " thank you" sounds a bit sarcastic coming from me. It has lead to a few misunderstandings and I kind of find it funny when it happens. I don't mean to sound like a jerk, I proooomise. XD