Mona is incredibly frustrated that she has to practice sparring today with Lissy, who is a typical white belt that doesn't take the sport seriously, by blue belt Mona's standards. Her first strike is being late to the class, which only sets off Mona's agitation, and it keeps growing more and more during the practice.
She progressively gets more annoyed as she notices Lissy's painted toenails and hands, and points it out that it's super disrespectful she had the time to paint her fucking nails and do her hair and all, but can't even show up for class on time. She decides to teach her a lesson and gets super mean and nasty with her, purposefully trying to make Lissy either take jiu jitsu seriously, or give it up and go to a nail painting class or something instead.
She extensively uses her sweaty feet to punish the foolish white belt girl, rubs them all over her face, and also gets her into some nasty foot chokes and foot locks, just to be even meaner. Because she's a cocky blue belt and she gets to do whatever she wants, as she says. Somewhere during the sparring Mona realizes what a joke this girl is. Not only she's being late, showing up with painted nails, but she can't even do any techniques they were learning in classes properly! So she decides to strip her from her GI pants, as she says, Lissy doesn't even deserve to wear them! She further rubs her blue belt in her face mocking her how she'll never get hers, before tying her up with it and finishing her lesson with a severe advice and all her pent up frustrations relieved.