How my mornings going...

Stood by my coffee maker that's just about to finish, feeling super thirsty. Thought I'd have a glass of water before my coffee. Got a glass out of the cupboard, remembered I had ice cubes in the freezer, then got one out and put it in my coffee mug instead of the glass next to it. For a couple of seconds I was like "I've done something wrong, but I don't know what."