Please tell me! Galko-chan
Is It True That Underwear Is Embarrassing?
S1 E6:
Seeing Galko's new lipstick, Otako explains that the lips have always represented the person's genitals. Otako adds that you can also tell the condition of a person's genitals by looking at the shape of their lips, to which Galko inadvertently hides her own lips.