Tickle Japan
True... as I rember when the site was still up and running in English, the nature of the tapes was somethning like this...... The models would be tickled and have to keep a "code word" in mind; if the tickling loosened the code word out of them, they did not get a bonus....however, if they did manage to hold on to the secret word, they got extra $$ for the video. So, the tickling is very intense (the maker doesn't want to spend extra money on a model is is trying to get her to crack! Meanwhile, the model is undergoing some real, intense tickling while she tries to keep from shouting out the secret word or phrase.) So, while the tickling is intense, the model can basically stop the tickling by saying the "magic words", and she's already paid for the video, she's just losing a little extra. There was a case where the model forgot her secret word and wanted to say it but couldn't, but that happened only once.