Nonstop tickling of Sarah's feet and armpits!

In this clip Sarah is about to be tickled by Susana. She got tied up to the bed with her armpits exposed. Susana took advantage of that and began to mercilessly tickling them with her fingers. Sarah couldn’t do much but laugh and squirm. When Susana got bored she decided to go after Sarah’s feet. They were untied because she enjoyed watching Sarah struggle and fight to avoid being tickled