http://books.google.com/books?id=HT1jNOE8OBkC&pg=PA83&dq=feet+tickle&hl=en&ei=pEngTJWdC8WclgermanaAw&sa=X&oi=book_result&ct=result&resnum=9&ved=0CE8Q6AEwCDgU#v=onepage&q=feet%20tickle&f=false The tickling begins at the bottom of page 82.