Grouchy Old Grump
The older I get, the more sympathy I have for the grumpy old people in my life. You might tell yourself that you are never going to become one of those grumpy old people, because you are young and vibrant and carefree, and you see beauty in all around you, including those people who are being really obnoxious.
But someday—and that day is not long in coming—you will find yourself frequently getting annoyed at the smallest things. Children being loud and disrespectful will make you lose your mind. And don’t even get me started on being stuck around people who talk in a movie theater.