She knows just how much he hates being tickled, so that's exactly what she's going to be doing today for her and her audience's entertainment. She's a master at it and knows exactly where his most ticklish spots are. She starts on his armpits, and with no way to defend himself he can't do anything but laugh right into his gag and writhe around. She laughs at how pathetically he tries to struggle and get away but with those bonds there's no where to go.She's totally relentless with him, laughing at him as he bounces up and down trying to fight it, but it's useless. She moves on down to his feet, which she knows are extremely sensitive. He's flopping around now almost unable to breath because he's laughing so hard. She's having such a good time tormenting her stupid step-bro, and to be honest from his hard cock, it looks like he is too!