I tend to act like a cat... It's embarrassing when I do it and don't notice; people suddenly look at me like "whoa the fukk"
I can hardly ever remember people by name, even if I know exactly what they're like.
This also happens to me too. I'm too embarrassed to ask for their name, again, so I just wait until someone mentions it; til then, I just act awkwardly around the person
Also, I sometimes say the stuff I'm thinking about out loud without noticing