Alyson is tied down for Kassy to tickle. She does. Alyson tries to get away but can't. She begs Kassy to stop but no use. She starts on her stomach and armpits, moving up to her neck and face. Finishing up on her bare feet. She uses a feather when her hands can't get the desired effect.
The main course is when she traps her leg under her armpit and tickles her feet mercilessly.