I didn't!
TPBM has something else they should be doing right now.
You might be thinking of Central Standard Time, which, confusingly, has the same acronym.
In your comment box (or whatever it's called) there is a "Click to choose files" button. Press it, and something should come out (it's called files for me, but idk if it's the same for everyone.) Press it, and select the picture you want.
Don't feel bad, I was about to answer Hel too, but you ninja'd me. Then Marukka said more well known and it just clicked.
Could someone else take this one? It's about two hours till bedtime for me, and I don't want to miss any answers.