So, while very tired, I managed to find myself at a local coffee shop. I ordered my coffee, went over to the stand where the milk/sugar and stuff is.
What I intended to do next was to get a couple of sugar packets and put them into my coffee, and throw away the paper package, as usual.
What I actually did was, grab two sugar packets, tear them open and dump their contents directly into.... the trash. Yep. My brain skipped over the part where this step requires putting the package contents into my coffee.
I stood there for a minute while my brain tried to process what I had just done.
Once my brain caught up, I mentally facepalmed, dropped the now empty packets into the garbage, grabbed my coffee and went to sit down and drink it. I punished myself with drinking black coffee because I was too tired and stupid to deserve my coffee any other way.
I've done things along this line too many times since having kids lol
Worst lately was trying to get a juice box for the kid and intending to throw away the straw wrapper but instead throwing away the straw and being left with a kid pissed at having no straw to drink her juice box