I feel ya on the awful day, Nexa.
Today Tristan woke up in "a mood." Since 5:30 this morning, it's been one long, endless session of continuous, back-to-back tantrums. And since he was awake and/or restless for two hours in the middle of the night, I haven't gotten enough sleep to be able to handle it gracefully and have lost my cool a couple times, including when I wasn't able to watch the inauguration because even though he kept asking for yogurt, he would throw a tantrum whenever I tried to go GET him some yogurt, and then he'd get even more hysterical and start demanding it again when I told him he didn't have to have yogurt if he didn't want it.
Apparently he's decided 20 months is plenty old enough to start with the "terrible twos."
Thankfully, a telemarketer called just as I was on my way to put him down for a nap, so I had someone on whom I could take my frustration out.