Mistress Phoenix gives it to Barbara who is bound and gagged on the bed. First she tries to coax her into tickling her neck after tickling her sides and underarms briefly. When Barbara refuses to give it up, Phoenix goes on the offensive and lunges at her exposed and vulnerable soles. She mixes it up with alternating feet and simultaneous action. And all Barbara can do is scream, laugh and beg for an orgasm. Great action!