Why does tickling yourself not feel ticklish, but being tickled by someone else does?

Question

Why does tickling yourself not feel ticklish, but being tickled by someone else does?

In: Biology

Answer 1

Your brain processes what you “do” before what you “receive”. You know, cognizance. You know what to expect, before it even happens. A similar NSFW question got answers that said in auto-fellatio circumstances you felt like sucking d*** as opposed to getting your d*** sucked. I’m sure someone can explain it better, but this is the essence.