Lady Shay had an issue with this guy and she felt like he did not do what she wanted him to do. That pissed her off and she had to nip it in the bud. That is why she felt that the best way for her to react to what he did was to punish him. And punish him she did. She used her foot fetish to do it and he was not only humiliated, but he was also choked as he had to gag on her feet.
If it is fun and it can be done without much struggle, lady Shay is always down for it. And that is what she did today as she taught herself how to fuck a guy with her feet. She wanted to learn it as a skill that would come in handy when she did not want to have sex or when she needed to diversify and make things more interesting.