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 ...

Tickling is strange because it does not feel optional. You do not decide to laugh. Your body just does it. The sound comes out before your brain has time to judge whether anything is funny. People ...

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 ...