Because people lie, have a spot that hasnt been tickled yet, are hiding the fact that they are ticklish hoping for someone to call them on it....etc.....
According to her instagram, she had broke her forearm and they tied her up so they could hide cast. The tickling was adlibbed or maybe they secretly wanted to tickle her and used the brok arm as a excuse.
wish I moved to tampa where alot of tickle action happens when I was invited years ago lol on a side note...novice when ive had this account since 02? lol
how about a time travel/alternate dimension kinda story where someone tickles their double. Imagine being tickled by someone that knows every nook and cranny to tickle....