Why can't you tickle yourself: Just imagine, you are sitting with your friend and suddenly he starts tickling you. You start laughing and running here and there to save yourself, but now tell me, what ...

Tell a silly joke, sneeze at a rather inopportune moment, remember something that embarrassed a good friend, forget which suit is trump in the card game you’re playing…there are a thousand and one ...

Tickling is a very strange sensation because it doesn't depend on your will. That's right, you don't decide whether or not to ...