"Even though cum cum" is the title of this chapter, it's also a reference to one of the sex scenes in the play. It's about a girl who's having an affair with a boy's brother. She's a "slut" , but she doesn't want to hurt the feelings of the boy, so she's going to have sex with him anyway. The sex scene in this chapter is all about the "slip-slack" . The girl is trying to get her boyfriend to do something, but he won't do it. He's just going to "stomach" her .