What I’m getting from that is hetero girl-on-girl is somewhat performative and passive, instead of the hardcore fucking expected by the red-haired lesbian (hence “the lesbian”), as indicated by her response that she (the lesbian) would be doing all the work and her accepting the claim that the “straight” black-haired woman (hence “the straight”) will be doing makeup as her (the straight’s) hetero part of the hetero-homo sex-exchange. The second half is the absurdist punchline in the execution. Movie-level cosmetics, including realistic amounts of hair – enough to create a hairball during unknown forms of oralplay, presumably provided by the straight. And a dogged insistence from the lesbian that dislodging a hairball not end the sexual encounter, which required continuous singing. Perhaps it was a sexual rendition of the musical “Cats”, further tying in existing stereotypes of queer people and their relation with/affinity to theater and the fine arts.