My answer to the question of the thread is: yes, when I don't know the reason for the laughter. When I hear someone laugh on street or in the bus I always turn around looking and hoping it was caused by tickling.
But when I see someone bursting into laughter and knows it was caused by a joke or watching a comedy, I don't really think of tickling.
But when I see someone bursting into laughter and knows it was caused by a joke or watching a comedy, I don't really think of tickling.